#231C74#231C74

#231C74 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.4% C 0.143 H 277.2°. Best body text is #FFFFFF at 14.10:1 contrast (WCAG AA passes).

Color values

HEX	#231C74
RGB	rgb(35, 28, 116)
HSL	hsl(245, 61%, 28%)
HSV	hsv(245, 76%, 45%)
CMYK	cmyk(69.8%, 75.9%, 0%, 54.5%)
CIE-LAB	lab(17.68, 32.42, -49.13)
CIE-LCH	lch(17.68, 58.86, 303.42°)
OKLab	oklab(30.43% 0.0179 -0.1419)
OKLCH	oklch(30.43% 0.143 277.2)
XYZ	xyz(4.2598, 2.4484, 16.7677)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C74 #6D741C

analogous

#1C4174 #231C74 #4F1C74

triadic

#231C74 #74231C #1C7423

tetradic

#231C74 #741C41 #6D741C #1C744F

square

#231C74 #741C41 #6D741C #1C744F

split-complementary

#231C74 #744F1C #41741C

monochromatic

#070619 #141043 #231C74 #3228A5 #473BD0

Accessibility & contrast

On white

14.10

#231C74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#231C74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C74

14.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C74	#FFFFFF	#000000	##FFFFFF
##231C74	1.00	14.10	1.49	14.10
#FFFFFF	14.10	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F77

Deuteranopia (green-blind)

#002872

Tritanopia (blue-blind)

#003546

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #231c74;
/* rgb */ color: rgb(35, 28, 116);
/* oklch */ color: oklch(30.4% 0.143 277.2);

Tailwind

colors: {
  custom: {
    50: '#6b599d',
    500: '#231c74',
    950: '#000000',
  },
}

SCSS

$custom: #231c74;
$custom-light: #6b599d;
$custom-dark: #000000;

JSON

{
  "hex": "#231c74",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 116
  },
  "hsl": {
    "h": 244.773,
    "s": 61.111,
    "l": 28.235
  },
  "oklch": {
    "l": 0.30432,
    "c": 0.14303,
    "h": 277.2
  },
  "luminance": 0.02449
}

Semantic roles & 50–950 ramp

primary

#231C74

secondary

#A0A843

accent

#E444D7

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #231C74

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

Preview Lab → · Contrast checker → · Palette generator →