#231C87#231C87

#231C87 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.5% C 0.168 H 274.7°. Best body text is #FFFFFF at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#231C87
RGB	rgb(35, 28, 135)
HSL	hsl(244, 66%, 32%)
HSV	hsv(244, 79%, 53%)
CMYK	cmyk(74.1%, 79.3%, 0%, 47.1%)
CIE-LAB	lab(19.79, 38.90, -57.74)
CIE-LCH	lch(19.79, 69.62, 303.97°)
OKLab	oklab(32.55% 0.0136 -0.167)
OKLCH	oklch(32.55% 0.168 274.7)
XYZ	xyz(5.4801, 2.9366, 23.1950)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C87 #80871C

analogous

#1C4B87 #231C87 #591C87

triadic

#231C87 #87231C #1C8723

tetradic

#231C87 #871C4B #80871C #1C8759

square

#231C87 #871C4B #80871C #1C8759

split-complementary

#231C87 #87591C #4B871C

monochromatic

#090722 #161154 #231C87 #3027BA #4F45D8

Accessibility & contrast

On white

13.23

#231C87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#231C87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C87

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C87	#FFFFFF	#000000	##FFFFFF
##231C87	1.00	13.23	1.59	13.23
#FFFFFF	13.23	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358A

Deuteranopia (green-blind)

#002B85

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #231c87;
/* rgb */ color: rgb(35, 28, 135);
/* oklch */ color: oklch(32.5% 0.168 274.7);

Tailwind

colors: {
  custom: {
    50: '#6f5bab',
    500: '#231c87',
    950: '#000000',
  },
}

SCSS

$custom: #231c87;
$custom-light: #6f5bab;
$custom-dark: #000000;

JSON

{
  "hex": "#231c87",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 135
  },
  "hsl": {
    "h": 243.925,
    "s": 65.644,
    "l": 31.961
  },
  "oklch": {
    "l": 0.32545,
    "c": 0.16755,
    "h": 274.7
  },
  "luminance": 0.02937
}

Semantic roles & 50–950 ramp

primary

#231C87

secondary

#B2BA45

accent

#E93FDE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #231C87

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

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