#231A99#231A99

#231A99 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.4% C 0.191 H 273.0°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#231A99
RGB	rgb(35, 26, 153)
HSL	hsl(244, 71%, 35%)
HSV	hsv(244, 83%, 60%)
CMYK	cmyk(77.1%, 83%, 0%, 40%)
CIE-LAB	lab(21.56, 45.77, -65.99)
CIE-LCH	lch(21.56, 80.31, 304.74°)
OKLab	oklab(34.4% 0.0099 -0.1909)
OKLCH	oklch(34.4% 0.191 273)
XYZ	xyz(6.8104, 3.3953, 30.4272)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231A99 #90991A

analogous

#1A5099 #231A99 #621A99

triadic

#231A99 #99231A #1A9923

tetradic

#231A99 #991A50 #90991A #1A9962

square

#231A99 #991A50 #90991A #1A9962

split-complementary

#231A99 #99621A #50991A

monochromatic

#0B0830 #171165 #231A99 #2F23CD #574DE1

Accessibility & contrast

On white

12.51

#231A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#231A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231A99

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231A99	#FFFFFF	#000000	##FFFFFF
##231A99	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A9C

Deuteranopia (green-blind)

#002D97

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #231a99;
/* rgb */ color: rgb(35, 26, 153);
/* oklch */ color: oklch(34.4% 0.191 273.0);

Tailwind

colors: {
  custom: {
    50: '#745bb8',
    500: '#231a99',
    950: '#000000',
  },
}

SCSS

$custom: #231a99;
$custom-light: #745bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#231a99",
  "rgb": {
    "r": 35,
    "g": 26,
    "b": 153
  },
  "hsl": {
    "h": 244.252,
    "s": 70.95,
    "l": 35.098
  },
  "oklch": {
    "l": 0.34402,
    "c": 0.19117,
    "h": 273
  },
  "luminance": 0.03396
}

Semantic roles & 50–950 ramp

primary

#231A99

secondary

#BAC34C

accent

#EE3AE1

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231A99

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

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