#1551a9

Color #1551a9

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 15.25 Nearest Tailwind class sky-800 #00598a · ΔE 7.3

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

Conversions

HEX

#1551a9

RGB

rgb(21, 81, 169)

HSL

hsl(215.7, 77.9%, 37.3%)

HSV / HSB

hsv(215.7, 87.6%, 66.3%)

CMYK

cmyk(87.6%, 52.1%, 0%, 33.7%)

LAB

lab(35.81, 15.93, -52.35)

LCH

lch(35.81, 54.72, 286.92)

OKLCH

oklch(45.2%, 0.1539, 258.91)

HWB

hwb(215.7, 8.2%, 33.7%)

Harmony colors

Complementary

#a96d15

Analogous

#159ba9

#1551a9

#2315a9

Triadic

#1551a9

#a91551

#51a915

Split-complementary

#1551a9

#a92315

#9ba915

Tetradic

#1551a9

#6d15a9

#a96d15

#51a915

Square

#1551a9

#a9159b

#a96d15

#15a923

Shades

Color #1551a9 mixed toward black.

#12448d

#0e3671

#0b2955

#071b38

#040e1c

Tints

Color #1551a9 mixed toward white.

#1b68d9

#4185e7

#71a3ed

#a0c2f3

#d0e0f9

Tones

Color #1551a9 mixed toward gray.

#21539d

#2e5691

#3a5884

#465a78

#535d6b

Accessibility

Aa White text on this color

7.55:1

Aa Black text on this color

2.78:1

White text reads better on this background (7.55:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#383999 · ΔE 10.2

Deuteranopia

#353095 · ΔE 12.5

Tritanopia

#1b8c88 · ΔE 34.3

Achromatopsia

#545454 · ΔE 24.6

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

Code

CSS

background-color: #1551a9;

Tailwind (arbitrary value)

bg-[#1551a9]

Related colors

Light Steel Blue #b0c4de

Cornflower Blue #6495ed

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#1551a9 (#1551a9) is rgb(21, 81, 169) in RGB.

No, #1551a9 is not web-safe. The nearest web-safe colors are among its tones and shades below.

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 #1551a9, or check how it holds up for accessibility.

Generate a palette → Check contrast