#231F74#231F74

#231F74 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.140 H 276.5°. Best body text is #FFFFFF at 13.82:1 contrast (WCAG AA passes).

Color values

HEX	#231F74
RGB	rgb(35, 31, 116)
HSL	hsl(243, 58%, 29%)
HSV	hsv(243, 73%, 45%)
CMYK	cmyk(69.8%, 73.3%, 0%, 54.5%)
CIE-LAB	lab(18.36, 30.55, -48.02)
CIE-LCH	lch(18.36, 56.92, 302.47°)
OKLab	oklab(30.91% 0.0158 -0.1387)
OKLCH	oklch(30.91% 0.14 276.5)
XYZ	xyz(4.3345, 2.5979, 16.7926)
Luminance	0.0260 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F74 #70741F

analogous

#1F4674 #231F74 #4E1F74

triadic

#231F74 #74231F #1F7423

tetradic

#231F74 #741F46 #70741F #1F744E

square

#231F74 #741F46 #70741F #1F744E

split-complementary

#231F74 #744E1F #46741F

monochromatic

#070618 #141244 #231F74 #322CA4 #4841CC

Accessibility & contrast

On white

13.82

#231F74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#231F74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F74

13.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F74	#FFFFFF	#000000	##FFFFFF
##231F74	1.00	13.82	1.52	13.82
#FFFFFF	13.82	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003077

Deuteranopia (green-blind)

#002972

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #231f74;
/* rgb */ color: rgb(35, 31, 116);
/* oklch */ color: oklch(30.9% 0.140 276.5);

Tailwind

colors: {
  custom: {
    50: '#6a5b9d',
    500: '#231f74',
    950: '#000000',
  },
}

SCSS

$custom: #231f74;
$custom-light: #6a5b9d;
$custom-dark: #000000;

JSON

{
  "hex": "#231f74",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 116
  },
  "hsl": {
    "h": 242.824,
    "s": 57.823,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30912,
    "c": 0.13959,
    "h": 276.5
  },
  "luminance": 0.02598
}

Semantic roles & 50–950 ramp

primary

#231F74

secondary

#A3A847

accent

#E147DA

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #231F74

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

Preview Lab → · Contrast checker → · Palette generator →