#231D90#231D90

#231D90 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.178 H 273.6°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#231D90
RGB	rgb(35, 29, 144)
HSL	hsl(243, 66%, 34%)
HSV	hsv(243, 80%, 56%)
CMYK	cmyk(75.7%, 79.9%, 0%, 43.5%)
CIE-LAB	lab(21.01, 41.35, -61.34)
CIE-LCH	lch(21.01, 73.97, 303.98°)
OKLab	oklab(33.71% 0.011 -0.1775)
OKLCH	oklch(33.71% 0.178 273.6)
XYZ	xyz(6.1649, 3.2490, 26.6824)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D90 #8A901D

analogous

#1D5190 #231D90 #5D1D90

triadic

#231D90 #90231D #1D9023

tetradic

#231D90 #901D51 #8A901D #1D905D

square

#231D90 #901D51 #8A901D #1D905D

split-complementary

#231D90 #905D1D #51901D

monochromatic

#0A082A #17135D #231D90 #2F27C3 #544CDB

Accessibility & contrast

On white

12.73

#231D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#231D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D90

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D90	#FFFFFF	#000000	##FFFFFF
##231D90	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003893

Deuteranopia (green-blind)

#002D8E

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #231d90;
/* rgb */ color: rgb(35, 29, 144);
/* oklch */ color: oklch(33.7% 0.178 273.6);

Tailwind

colors: {
  custom: {
    50: '#715cb2',
    500: '#231d90',
    950: '#000000',
  },
}

SCSS

$custom: #231d90;
$custom-light: #715cb2;
$custom-dark: #000000;

JSON

{
  "hex": "#231d90",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 144
  },
  "hsl": {
    "h": 243.13,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3371,
    "c": 0.1778,
    "h": 273.6
  },
  "luminance": 0.0325
}

Semantic roles & 50–950 ramp

primary

#231D90

secondary

#B7BD4B

accent

#E93EE0

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231D90

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

Preview Lab → · Contrast checker → · Palette generator →