#231D73#231D73

#231D73 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.141 H 277.1°. Best body text is #FFFFFF at 14.05:1 contrast (WCAG AA passes).

Color values

HEX	#231D73
RGB	rgb(35, 29, 115)
HSL	hsl(244, 60%, 28%)
HSV	hsv(244, 75%, 45%)
CMYK	cmyk(69.6%, 74.8%, 0%, 54.9%)
CIE-LAB	lab(17.80, 31.45, -48.29)
CIE-LCH	lch(17.80, 57.63, 303.07°)
OKLab	oklab(30.48% 0.0174 -0.1395)
OKLCH	oklch(30.48% 0.141 277.1)
XYZ	xyz(4.2260, 2.4735, 16.4711)
Luminance	0.0247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D73 #6D731D

analogous

#1D4273 #231D73 #4E1D73

triadic

#231D73 #73231D #1D7323

tetradic

#231D73 #731D42 #6D731D #1D734E

square

#231D73 #731D42 #6D731D #1D734E

split-complementary

#231D73 #734E1D #42731D

monochromatic

#070618 #141142 #231D73 #3229A4 #473CCE

Accessibility & contrast

On white

14.05

#231D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#231D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D73

14.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D73	#FFFFFF	#000000	##FFFFFF
##231D73	1.00	14.05	1.49	14.05
#FFFFFF	14.05	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F76

Deuteranopia (green-blind)

#002871

Tritanopia (blue-blind)

#003546

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #231d73;
/* rgb */ color: rgb(35, 29, 115);
/* oklch */ color: oklch(30.5% 0.141 277.1);

Tailwind

colors: {
  custom: {
    50: '#6a5a9c',
    500: '#231d73',
    950: '#000000',
  },
}

SCSS

$custom: #231d73;
$custom-light: #6a5a9c;
$custom-dark: #000000;

JSON

{
  "hex": "#231d73",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 115
  },
  "hsl": {
    "h": 244.186,
    "s": 59.722,
    "l": 28.235
  },
  "oklch": {
    "l": 0.30482,
    "c": 0.14056,
    "h": 277.1
  },
  "luminance": 0.02474
}

Semantic roles & 50–950 ramp

primary

#231D73

secondary

#A0A745

accent

#E345D8

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #231D73

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

Preview Lab → · Contrast checker → · Palette generator →