#5157CC#5157CC

#5157CC is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.9% C 0.178 H 276.0°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#5157CC
RGB	rgb(81, 87, 204)
HSL	hsl(237, 55%, 56%)
HSV	hsv(237, 60%, 80%)
CMYK	cmyk(60.3%, 57.4%, 0%, 20%)
CIE-LAB	lab(42.65, 32.72, -61.64)
CIE-LCH	lch(42.65, 69.78, 297.96°)
OKLab	oklab(51.86% 0.0187 -0.1771)
OKLCH	oklch(51.86% 0.178 276)
XYZ	xyz(17.6971, 12.9240, 58.6770)
Luminance	0.1293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5157CC #CCC651

analogous

#5194CC #5157CC #8851CC

triadic

#5157CC #CC5157 #57CC51

tetradic

#5157CC #CC5194 #CCC651 #51CC88

square

#5157CC #CC5194 #CCC651 #51CC88

split-complementary

#5157CC #CC8851 #94CC51

monochromatic

#25297E #3339AD #5157CC #8085DA #B0B2E8

Accessibility & contrast

On white

5.86

#5157CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#5157CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5157CC

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5157CC	#FFFFFF	#000000	##FFFFFF
##5157CC	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD0

Deuteranopia (green-blind)

#0060CA

Tritanopia (blue-blind)

#007389

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #5157cc;
/* rgb */ color: rgb(81, 87, 204);
/* oklch */ color: oklch(51.9% 0.178 276.0);

Tailwind

colors: {
  custom: {
    50: '#8d86dc',
    500: '#5157cc',
    950: '#000000',
  },
}

SCSS

$custom: #5157cc;
$custom-light: #8d86dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5157cc",
  "rgb": {
    "r": 81,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 237.073,
    "s": 54.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.51863,
    "c": 0.17804,
    "h": 276
  },
  "luminance": 0.12925
}

Semantic roles & 50–950 ramp

primary

#5157CC

secondary

#D6D3A3

accent

#D74ADE

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #5157CC

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

Preview Lab → · Contrast checker → · Palette generator →