#5156CC#5156CC

#5156CC is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.7% C 0.179 H 276.3°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#5156CC
RGB	rgb(81, 86, 204)
HSL	hsl(238, 55%, 56%)
HSV	hsv(238, 60%, 80%)
CMYK	cmyk(60.3%, 57.8%, 0%, 20%)
CIE-LAB	lab(42.40, 33.34, -62.03)
CIE-LCH	lch(42.40, 70.42, 298.25°)
OKLab	oklab(51.68% 0.0197 -0.1782)
OKLCH	oklch(51.68% 0.179 276.3)
XYZ	xyz(17.6167, 12.7632, 58.6502)
Luminance	0.1277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5156CC #CCC751

analogous

#5193CC #5156CC #8951CC

triadic

#5156CC #CC5156 #56CC51

tetradic

#5156CC #CC5193 #CCC751 #51CC89

square

#5156CC #CC5193 #CCC751 #51CC89

split-complementary

#5156CC #CC8951 #93CC51

monochromatic

#25287E #3338AD #5156CC #8084DA #B0B2E8

Accessibility & contrast

On white

5.91

#5156CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#5156CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5156CC

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5156CC	#FFFFFF	#000000	##FFFFFF
##5156CC	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D0

Deuteranopia (green-blind)

#005FCA

Tritanopia (blue-blind)

#007289

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #5156cc;
/* rgb */ color: rgb(81, 86, 204);
/* oklch */ color: oklch(51.7% 0.179 276.3);

Tailwind

colors: {
  custom: {
    50: '#8e85dc',
    500: '#5156cc',
    950: '#000000',
  },
}

SCSS

$custom: #5156cc;
$custom-light: #8e85dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5156cc",
  "rgb": {
    "r": 81,
    "g": 86,
    "b": 204
  },
  "hsl": {
    "h": 237.561,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.51681,
    "c": 0.17931,
    "h": 276.3
  },
  "luminance": 0.12765
}

Semantic roles & 50–950 ramp

primary

#5156CC

secondary

#D6D4A3

accent

#D84ADE

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #5156CC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →