#231D9E#231D9E

#231D9E is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.3% C 0.195 H 272.3°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX	#231D9E
RGB	rgb(35, 29, 158)
HSL	hsl(243, 69%, 37%)
HSV	hsv(243, 82%, 62%)
CMYK	cmyk(77.8%, 81.6%, 0%, 38%)
CIE-LAB	lab(22.67, 45.89, -67.23)
CIE-LCH	lch(22.67, 81.39, 304.31°)
OKLab	oklab(35.34% 0.0077 -0.1945)
OKLCH	oklch(35.34% 0.195 272.3)
XYZ	xyz(7.3020, 3.7039, 32.6712)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D9E #989E1D

analogous

#1D589E #231D9E #641D9E

triadic

#231D9E #9E231D #1D9E23

tetradic

#231D9E #9E1D58 #989E1D #1D9E64

square

#231D9E #9E1D58 #989E1D #1D9E64

split-complementary

#231D9E #9E641D #589E1D

monochromatic

#0C0A37 #18146A #231D9E #2E26D2 #5C56E0

Accessibility & contrast

On white

12.06

#231D9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#231D9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D9E

12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D9E	#FFFFFF	#000000	##FFFFFF
##231D9E	1.00	12.06	1.74	12.06
#FFFFFF	12.06	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA2

Deuteranopia (green-blind)

#00309C

Tritanopia (blue-blind)

#00465E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231d9e;
/* rgb */ color: rgb(35, 29, 158);
/* oklch */ color: oklch(35.3% 0.195 272.3);

Tailwind

colors: {
  custom: {
    50: '#755dbc',
    500: '#231d9e',
    950: '#000000',
  },
}

SCSS

$custom: #231d9e;
$custom-light: #755dbc;
$custom-dark: #000000;

JSON

{
  "hex": "#231d9e",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 158
  },
  "hsl": {
    "h": 242.791,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.35344,
    "c": 0.19469,
    "h": 272.3
  },
  "luminance": 0.03705
}

Semantic roles & 50–950 ramp

primary

#231D9E

secondary

#BEC354

accent

#EC3CE4

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231D9E

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

Preview Lab → · Contrast checker → · Palette generator →