#231C88#231C88

#231C88 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.7% C 0.169 H 274.5°. Best body text is #FFFFFF at 13.18:1 contrast (WCAG AA passes).

Color values

HEX	#231C88
RGB	rgb(35, 28, 136)
HSL	hsl(244, 66%, 32%)
HSV	hsv(244, 79%, 53%)
CMYK	cmyk(74.3%, 79.4%, 0%, 46.7%)
CIE-LAB	lab(19.90, 39.24, -58.18)
CIE-LCH	lch(19.90, 70.18, 303.99°)
OKLab	oklab(32.66% 0.0134 -0.1683)
OKLCH	oklch(32.66% 0.169 274.5)
XYZ	xyz(5.5509, 2.9649, 23.5675)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C88 #81881C

analogous

#1C4B88 #231C88 #591C88

triadic

#231C88 #88231C #1C8823

tetradic

#231C88 #881C4B #81881C #1C8859

square

#231C88 #881C4B #81881C #1C8859

split-complementary

#231C88 #88591C #4B881C

monochromatic

#090722 #161255 #231C88 #3026BB #4F46D9

Accessibility & contrast

On white

13.18

#231C88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#231C88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C88

13.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C88	#FFFFFF	#000000	##FFFFFF
##231C88	1.00	13.18	1.59	13.18
#FFFFFF	13.18	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358B

Deuteranopia (green-blind)

#002B86

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #231c88;
/* rgb */ color: rgb(35, 28, 136);
/* oklch */ color: oklch(32.7% 0.169 274.5);

Tailwind

colors: {
  custom: {
    50: '#6f5bac',
    500: '#231c88',
    950: '#000000',
  },
}

SCSS

$custom: #231c88;
$custom-light: #6f5bac;
$custom-dark: #000000;

JSON

{
  "hex": "#231c88",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 136
  },
  "hsl": {
    "h": 243.889,
    "s": 65.854,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32659,
    "c": 0.16881,
    "h": 274.5
  },
  "luminance": 0.02965
}

Semantic roles & 50–950 ramp

primary

#231C88

secondary

#B3BA45

accent

#E93FDE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #231C88

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

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