#231D91#231D91

#231D91 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.8% C 0.179 H 273.5°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#231D91
RGB	rgb(35, 29, 145)
HSL	hsl(243, 67%, 34%)
HSV	hsv(243, 80%, 57%)
CMYK	cmyk(75.9%, 80%, 0%, 43.1%)
CIE-LAB	lab(21.13, 41.68, -61.77)
CIE-LCH	lch(21.13, 74.51, 304.01°)
OKLab	oklab(33.83% 0.0108 -0.1787)
OKLCH	oklch(33.83% 0.179 273.5)
XYZ	xyz(6.2416, 3.2797, 27.0867)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D91 #8B911D

analogous

#1D5191 #231D91 #5D1D91

triadic

#231D91 #91231D #1D9123

tetradic

#231D91 #911D51 #8B911D #1D915D

square

#231D91 #911D51 #8B911D #1D915D

split-complementary

#231D91 #915D1D #51911D

monochromatic

#0A092B #17135E #231D91 #2F27C4 #544DDB

Accessibility & contrast

On white

12.68

#231D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#231D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D91

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D91	#FFFFFF	#000000	##FFFFFF
##231D91	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003894

Deuteranopia (green-blind)

#002D8F

Tritanopia (blue-blind)

#004057

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #231d91;
/* rgb */ color: rgb(35, 29, 145);
/* oklch */ color: oklch(33.8% 0.179 273.5);

Tailwind

colors: {
  custom: {
    50: '#725cb3',
    500: '#231d91',
    950: '#000000',
  },
}

SCSS

$custom: #231d91;
$custom-light: #725cb3;
$custom-dark: #000000;

JSON

{
  "hex": "#231d91",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 145
  },
  "hsl": {
    "h": 243.103,
    "s": 66.667,
    "l": 34.118
  },
  "oklch": {
    "l": 0.33825,
    "c": 0.17903,
    "h": 273.5
  },
  "luminance": 0.0328
}

Semantic roles & 50–950 ramp

primary

#231D91

secondary

#B8BE4C

accent

#EA3EE1

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231D91

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

Preview Lab → · Contrast checker → · Palette generator →