#231D9D#231D9D

#231D9D is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.2% C 0.194 H 272.3°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#231D9D
RGB	rgb(35, 29, 157)
HSL	hsl(243, 69%, 36%)
HSV	hsv(243, 82%, 62%)
CMYK	cmyk(77.7%, 81.5%, 0%, 38.4%)
CIE-LAB	lab(22.55, 45.57, -66.81)
CIE-LCH	lch(22.55, 80.87, 304.29°)
OKLab	oklab(35.23% 0.0079 -0.1933)
OKLCH	oklch(35.23% 0.194 272.3)
XYZ	xyz(7.2163, 3.6696, 32.2197)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D9D #979D1D

analogous

#1D579D #231D9D #631D9D

triadic

#231D9D #9D231D #1D9D23

tetradic

#231D9D #9D1D57 #979D1D #1D9D63

square

#231D9D #9D1D57 #979D1D #1D9D63

split-complementary

#231D9D #9D631D #579D1D

monochromatic

#0C0A36 #171369 #231D9D #2F27D1 #5B55E0

Accessibility & contrast

On white

12.11

#231D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#231D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D9D

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D9D	#FFFFFF	#000000	##FFFFFF
##231D9D	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA1

Deuteranopia (green-blind)

#002F9B

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231d9d;
/* rgb */ color: rgb(35, 29, 157);
/* oklch */ color: oklch(35.2% 0.194 272.3);

Tailwind

colors: {
  custom: {
    50: '#755dbb',
    500: '#231d9d',
    950: '#000000',
  },
}

SCSS

$custom: #231d9d;
$custom-light: #755dbb;
$custom-dark: #000000;

JSON

{
  "hex": "#231d9d",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 157
  },
  "hsl": {
    "h": 242.813,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35226,
    "c": 0.1935,
    "h": 272.3
  },
  "luminance": 0.0367
}

Semantic roles & 50–950 ramp

primary

#231D9D

secondary

#BEC353

accent

#EC3CE3

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231D9D

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

Preview Lab → · Contrast checker → · Palette generator →