#1181bb

Color #1181bb

A vivid, highly saturated medium blue.

Closest named color Steel Blue #4682b4 · ΔE 7.18 Nearest Tailwind class sky-600 #0084d1 · ΔE 3.5

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#1181bb

RGB

rgb(17, 129, 187)

HSL

hsl(200.5, 83.3%, 40%)

HSV / HSB

hsv(200.5, 90.9%, 73.3%)

CMYK

cmyk(90.9%, 31%, 0%, 26.7%)

LAB

lab(51.16, -7.5, -38.36)

LCH

lch(51.16, 39.09, 258.94)

OKLCH

oklch(57.5%, 0.1263, 239.56)

HWB

hwb(200.5, 6.7%, 26.7%)

Harmony colors

Complementary

#bb4b11

Analogous

#11bba0

#1181bb

#112cbb

Triadic

#1181bb

#bb1181

#81bb11

Split-complementary

#1181bb

#bb112c

#bba011

Tetradic

#1181bb

#4b11bb

#bb4b11

#81bb11

Square

#1181bb

#a011bb

#bb4b11

#2cbb11

Shades

Color #1181bb mixed toward black.

#0e6b9c

#0b567d

#09405d

#062b3e

#03151f

Tints

Color #1181bb mixed toward white.

#15a1ea

#44b4ee

#73c7f2

#a2d9f6

#d0ecfb

Tones

Color #1181bb mixed toward gray.

#1f7cad

#2d789f

#3c7390

#4a6f82

#586a74

Accessibility

Aa White text on this color

4.3:1

Aa Black text on this color

4.88:1

Black text reads better on this background (4.88:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#5859af · ΔE 20.6

Deuteranopia

#534bac · ΔE 24.1

Tritanopia

#22a5a3 · ΔE 23.4

Achromatopsia

#7a7a7a · ΔE 20.9

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #1181bb;

Tailwind (arbitrary value)

bg-[#1181bb]

Related colors

Light Sky Blue #87cefa

Sky Blue #87ceeb

Charcoal #36454f

Deep Sky Blue #00bfff

Light Blue #add8e6

Steel Blue #4682b4

Frequently asked questions

#1181bb (#1181bb) is rgb(17, 129, 187) in RGB.

No, #1181bb is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #1181bb, or check how it holds up for accessibility.

Generate a palette → Check contrast