#231D8C#231D8C

#231D8C is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.3% C 0.173 H 274.0°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#231D8C
RGB	rgb(35, 29, 140)
HSL	hsl(243, 66%, 33%)
HSV	hsv(243, 79%, 55%)
CMYK	cmyk(75%, 79.3%, 0%, 45.1%)
CIE-LAB	lab(20.55, 40.02, -59.61)
CIE-LCH	lch(20.55, 71.80, 303.88°)
OKLab	oklab(33.25% 0.012 -0.1724)
OKLCH	oklch(33.25% 0.173 274)
XYZ	xyz(5.8646, 3.1289, 25.1007)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D8C #868C1D

analogous

#1D4E8C #231D8C #5A1D8C

triadic

#231D8C #8C231D #1D8C23

tetradic

#231D8C #8C1D4E #868C1D #1D8C5A

square

#231D8C #8C1D4E #868C1D #1D8C5A

split-complementary

#231D8C #8C5A1D #4E8C1D

monochromatic

#0A0827 #161259 #231D8C #3028BF #524AD9

Accessibility & contrast

On white

12.92

#231D8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#231D8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D8C

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D8C	#FFFFFF	#000000	##FFFFFF
##231D8C	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378F

Deuteranopia (green-blind)

#002C8A

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #231d8c;
/* rgb */ color: rgb(35, 29, 140);
/* oklch */ color: oklch(33.3% 0.173 274.0);

Tailwind

colors: {
  custom: {
    50: '#705baf',
    500: '#231d8c',
    950: '#000000',
  },
}

SCSS

$custom: #231d8c;
$custom-light: #705baf;
$custom-dark: #000000;

JSON

{
  "hex": "#231d8c",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 140
  },
  "hsl": {
    "h": 243.243,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.3325,
    "c": 0.17285,
    "h": 274
  },
  "luminance": 0.0313
}

Semantic roles & 50–950 ramp

primary

#231D8C

secondary

#B5BC49

accent

#E93FDF

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #231D8C

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

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