#5151CA#5151CA

#5151CA is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.6% C 0.183 H 277.6°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#5151CA
RGB	rgb(81, 81, 202)
HSL	hsl(240, 53%, 55%)
HSV	hsv(240, 60%, 79%)
CMYK	cmyk(59.9%, 59.9%, 0%, 20.8%)
CIE-LAB	lab(41.05, 35.76, -63.07)
CIE-LCH	lch(41.05, 72.51, 299.55°)
OKLab	oklab(50.64% 0.0243 -0.1813)
OKLCH	oklch(50.64% 0.183 277.6)
XYZ	xyz(16.9930, 11.8972, 57.2666)
Luminance	0.1190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151CA #CACA51

analogous

#518DCA #5151CA #8D51CA

triadic

#5151CA #CA5151 #51CA51

tetradic

#5151CA #CA518D #CACA51 #51CA8D

square

#5151CA #CA518D #CACA51 #51CA8D

split-complementary

#5151CA #CA8D51 #8DCA51

monochromatic

#25257B #3434AA #5151CA #8080D8 #AFAFE7

Accessibility & contrast

On white

6.21

#5151CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#5151CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151CA

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151CA	#FFFFFF	#000000	##FFFFFF
##5151CA	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CE

Deuteranopia (green-blind)

#005CC8

Tritanopia (blue-blind)

#006E86

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #5151ca;
/* rgb */ color: rgb(81, 81, 202);
/* oklch */ color: oklch(50.6% 0.183 277.6);

Tailwind

colors: {
  custom: {
    50: '#8e82db',
    500: '#5151ca',
    950: '#000000',
  },
}

SCSS

$custom: #5151ca;
$custom-light: #8e82db;
$custom-dark: #000000;

JSON

{
  "hex": "#5151ca",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 202
  },
  "hsl": {
    "h": 240,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.50635,
    "c": 0.18295,
    "h": 277.6
  },
  "luminance": 0.11898
}

Semantic roles & 50–950 ramp

primary

#5151CA

secondary

#D5D5A2

accent

#DD4BDD

background

#F9F7FD

surface

#F2EEFB

border

#CCC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #5151CA

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

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