#231F63#231F63

#231F63 is a dark, moderate blue. Relative luminance 0.022; OKLCH L 29.2% C 0.116 H 279.1°. Best body text is #FFFFFF at 14.51:1 contrast (WCAG AA passes).

Color values

HEX	#231F63
RGB	rgb(35, 31, 99)
HSL	hsl(244, 52%, 25%)
HSV	hsv(244, 69%, 39%)
CMYK	cmyk(64.6%, 68.7%, 0%, 61.2%)
CIE-LAB	lab(16.69, 24.40, -39.67)
CIE-LCH	lch(16.69, 46.57, 301.60°)
OKLab	oklab(29.2% 0.0183 -0.1142)
OKLCH	oklch(29.2% 0.116 279.1)
XYZ	xyz(3.4345, 2.2379, 12.0529)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F63 #5F631F

analogous

#1F3D63 #231F63 #451F63

triadic

#231F63 #63231F #1F6323

tetradic

#231F63 #631F3D #5F631F #1F6345

square

#231F63 #631F3D #5F631F #1F6345

split-complementary

#231F63 #63451F #3D631F

monochromatic

#080717 #131034 #231F63 #332E92 #443CC0

Accessibility & contrast

On white

14.51

#231F63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#231F63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F63

14.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F63	#FFFFFF	#000000	##FFFFFF
##231F63	1.00	14.51	1.45	14.51
#FFFFFF	14.51	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C65

Deuteranopia (green-blind)

#002762

Tritanopia (blue-blind)

#00303E

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #231f63;
/* rgb */ color: rgb(35, 31, 99);
/* oklch */ color: oklch(29.2% 0.116 279.1);

Tailwind

colors: {
  custom: {
    50: '#665b90',
    500: '#231f63',
    950: '#000000',
  },
}

SCSS

$custom: #231f63;
$custom-light: #665b90;
$custom-dark: #000000;

JSON

{
  "hex": "#231f63",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 99
  },
  "hsl": {
    "h": 243.529,
    "s": 52.308,
    "l": 25.49
  },
  "oklch": {
    "l": 0.29197,
    "c": 0.11567,
    "h": 279.1
  },
  "luminance": 0.02238
}

Semantic roles & 50–950 ramp

primary

#231F63

secondary

#939846

accent

#DC4CD3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06040D

muted

#7A797D

Preview Lab

Preview with #231F63

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

Preview Lab → · Contrast checker → · Palette generator →