#0a57d3

Color #0a57d3

A vivid, highly saturated medium blue.

Closest named color Royal Blue #4169e1 · ΔE 8.51 Nearest Tailwind class blue-600 #155dfc · ΔE 5.8

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

Conversions

HEX

#0a57d3

RGB

rgb(10, 87, 211)

HSL

hsl(217, 91%, 43.3%)

HSV / HSB

hsv(217, 95.3%, 82.7%)

CMYK

cmyk(95.3%, 58.8%, 0%, 17.3%)

LAB

lab(40.54, 28.19, -69.21)

LCH

lch(40.54, 74.73, 292.16)

OKLCH

oklch(49.7%, 0.203, 260.76)

HWB

hwb(217, 3.9%, 17.3%)

Harmony colors

Complementary

#d3860a

Analogous

#0abbd3

#0a57d3

#210ad3

Triadic

#0a57d3

#d30a57

#57d30a

Split-complementary

#0a57d3

#d3210a

#bbd30a

Tetradic

#0a57d3

#860ad3

#d3860a

#57d30a

Square

#0a57d3

#d30abb

#d3860a

#0ad321

Shades

Color #0a57d3 mixed toward black.

#0848b0

#073a8d

#052b69

#031d46

#020e23

Tints

Color #0a57d3 mixed toward white.

#196df4

#478af6

#75a7f8

#a3c5fb

#d1e2fd

Tones

Color #0a57d3 mixed toward gray.

#1b5bc2

#2b5fb1

#3c63a1

#4d6790

#5e6b7f

Accessibility

Aa White text on this color

6.33:1

Aa Black text on this color

3.32:1

White text reads better on this background (6.33:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#3a3bbe · ΔE 10

Deuteranopia

#3731b9 · ΔE 12.4

Tritanopia

#15aca7 · ΔE 42

Achromatopsia

#606060 · ΔE 27.9

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

Code

CSS

background-color: #0a57d3;

Tailwind (arbitrary value)

bg-[#0a57d3]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Royal Blue #4169e1

Frequently asked questions

#0a57d3 (#0a57d3) is rgb(10, 87, 211) in RGB.

No, #0a57d3 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.

Try it → Accessibility

Contrast Checker

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

Try it → Generators

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 #0a57d3, or check how it holds up for accessibility.

Generate a palette → Check contrast