#231B98#231B98

#231B98 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.4% C 0.189 H 273.0°. Best body text is #FFFFFF at 12.49:1 contrast (WCAG AA passes).

Color values

HEX	#231B98
RGB	rgb(35, 27, 152)
HSL	hsl(244, 70%, 35%)
HSV	hsv(244, 82%, 60%)
CMYK	cmyk(77%, 82.2%, 0%, 40.4%)
CIE-LAB	lab(21.61, 44.97, -65.30)
CIE-LCH	lch(21.61, 79.29, 304.55°)
OKLab	oklab(34.4% 0.0098 -0.1889)
OKLCH	oklch(34.4% 0.189 273)
XYZ	xyz(6.7507, 3.4075, 30.0016)
Luminance	0.0341 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B98 #90981B

analogous

#1B5198 #231B98 #611B98

triadic

#231B98 #98231B #1B9823

tetradic

#231B98 #981B51 #90981B #1B9861

square

#231B98 #981B51 #90981B #1B9861

split-complementary

#231B98 #98611B #51981B

monochromatic

#0B0930 #171264 #231B98 #2F24CC #574EE0

Accessibility & contrast

On white

12.49

#231B98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#231B98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B98

12.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B98	#FFFFFF	#000000	##FFFFFF
##231B98	1.00	12.49	1.68	12.49
#FFFFFF	12.49	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A9B

Deuteranopia (green-blind)

#002E96

Tritanopia (blue-blind)

#00425A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #231b98;
/* rgb */ color: rgb(35, 27, 152);
/* oklch */ color: oklch(34.4% 0.189 273.0);

Tailwind

colors: {
  custom: {
    50: '#745bb8',
    500: '#231b98',
    950: '#000000',
  },
}

SCSS

$custom: #231b98;
$custom-light: #745bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#231b98",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 152
  },
  "hsl": {
    "h": 243.84,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.34398,
    "c": 0.18918,
    "h": 273
  },
  "luminance": 0.03408
}

Semantic roles & 50–950 ramp

primary

#231B98

secondary

#BAC24D

accent

#ED3BE1

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #231B98

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

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