#231D78#231D78

#231D78 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.147 H 276.4°. Best body text is #FFFFFF at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#231D78
RGB	rgb(35, 29, 120)
HSL	hsl(244, 61%, 29%)
HSV	hsv(244, 76%, 47%)
CMYK	cmyk(70.8%, 75.8%, 0%, 52.9%)
CIE-LAB	lab(18.33, 33.20, -50.64)
CIE-LCH	lch(18.33, 60.55, 303.25°)
OKLab	oklab(31.02% 0.0164 -0.1463)
OKLCH	oklch(31.02% 0.147 276.4)
XYZ	xyz(4.5216, 2.5917, 18.0276)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D78 #72781D

analogous

#1D4578 #231D78 #511D78

triadic

#231D78 #78231D #1D7823

tetradic

#231D78 #781D45 #72781D #1D7851

square

#231D78 #781D45 #72781D #1D7851

split-complementary

#231D78 #78511D #45781D

monochromatic

#070619 #151147 #231D78 #3129A9 #483FD1

Accessibility & contrast

On white

13.83

#231D78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#231D78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D78

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D78	#FFFFFF	#000000	##FFFFFF
##231D78	1.00	13.83	1.52	13.83
#FFFFFF	13.83	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317B

Deuteranopia (green-blind)

#002976

Tritanopia (blue-blind)

#003748

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #231d78;
/* rgb */ color: rgb(35, 29, 120);
/* oklch */ color: oklch(31.0% 0.147 276.4);

Tailwind

colors: {
  custom: {
    50: '#6b5aa0',
    500: '#231d78',
    950: '#000000',
  },
}

SCSS

$custom: #231d78;
$custom-light: #6b5aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#231d78",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 120
  },
  "hsl": {
    "h": 243.956,
    "s": 61.074,
    "l": 29.216
  },
  "oklch": {
    "l": 0.31019,
    "c": 0.14723,
    "h": 276.4
  },
  "luminance": 0.02592
}

Semantic roles & 50–950 ramp

primary

#231D78

secondary

#A5AC45

accent

#E444DA

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08040F

muted

#7A797F

Preview Lab

Preview with #231D78

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

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