#231D88#231D88

#231D88 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.168 H 274.4°. Best body text is #FFFFFF at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#231D88
RGB	rgb(35, 29, 136)
HSL	hsl(243, 65%, 32%)
HSV	hsv(243, 79%, 53%)
CMYK	cmyk(74.3%, 78.7%, 0%, 46.7%)
CIE-LAB	lab(20.10, 38.68, -57.86)
CIE-LCH	lch(20.10, 69.60, 303.76°)
OKLab	oklab(32.8% 0.0129 -0.1674)
OKLCH	oklch(32.8% 0.168 274.4)
XYZ	xyz(5.5750, 3.0131, 23.5756)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D88 #82881D

analogous

#1D4D88 #231D88 #581D88

triadic

#231D88 #88231D #1D8823

tetradic

#231D88 #881D4D #82881D #1D8858

square

#231D88 #881D4D #82881D #1D8858

split-complementary

#231D88 #88581D #4D881D

monochromatic

#090723 #161256 #231D88 #3028BA #5048D8

Accessibility & contrast

On white

13.10

#231D88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#231D88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D88

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D88	#FFFFFF	#000000	##FFFFFF
##231D88	1.00	13.10	1.60	13.10
#FFFFFF	13.10	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358B

Deuteranopia (green-blind)

#002B86

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #231d88;
/* rgb */ color: rgb(35, 29, 136);
/* oklch */ color: oklch(32.8% 0.168 274.4);

Tailwind

colors: {
  custom: {
    50: '#6f5bac',
    500: '#231d88',
    950: '#000000',
  },
}

SCSS

$custom: #231d88;
$custom-light: #6f5bac;
$custom-dark: #000000;

JSON

{
  "hex": "#231d88",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 136
  },
  "hsl": {
    "h": 243.364,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.32795,
    "c": 0.16786,
    "h": 274.4
  },
  "luminance": 0.03014
}

Semantic roles & 50–950 ramp

primary

#231D88

secondary

#B3BA47

accent

#E840DE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #231D88

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

Preview Lab → · Contrast checker → · Palette generator →