#231D8F#231D8F

#231D8F is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.6% C 0.177 H 273.7°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#231D8F
RGB	rgb(35, 29, 143)
HSL	hsl(243, 66%, 34%)
HSV	hsv(243, 80%, 56%)
CMYK	cmyk(75.5%, 79.7%, 0%, 43.9%)
CIE-LAB	lab(20.90, 41.02, -60.91)
CIE-LCH	lch(20.90, 73.43, 303.96°)
OKLab	oklab(33.6% 0.0113 -0.1762)
OKLCH	oklch(33.6% 0.177 273.7)
XYZ	xyz(6.0888, 3.2186, 26.2816)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D8F #898F1D

analogous

#1D508F #231D8F #5C1D8F

triadic

#231D8F #8F231D #1D8F23

tetradic

#231D8F #8F1D50 #898F1D #1D8F5C

square

#231D8F #8F1D50 #898F1D #1D8F5C

split-complementary

#231D8F #8F5C1D #508F1D

monochromatic

#0A0829 #17135C #231D8F #2F27C2 #534CDB

Accessibility & contrast

On white

12.78

#231D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#231D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D8F

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D8F	#FFFFFF	#000000	##FFFFFF
##231D8F	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003792

Deuteranopia (green-blind)

#002D8D

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #231d8f;
/* rgb */ color: rgb(35, 29, 143);
/* oklch */ color: oklch(33.6% 0.177 273.7);

Tailwind

colors: {
  custom: {
    50: '#715cb1',
    500: '#231d8f',
    950: '#000000',
  },
}

SCSS

$custom: #231d8f;
$custom-light: #715cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#231d8f",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 143
  },
  "hsl": {
    "h": 243.158,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.33595,
    "c": 0.17657,
    "h": 273.7
  },
  "luminance": 0.03219
}

Semantic roles & 50–950 ramp

primary

#231D8F

secondary

#B7BD4B

accent

#E93FE0

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231D8F

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

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