#243F85#243F85

#243F85 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.9% C 0.122 H 265.2°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#243F85
RGB	rgb(36, 63, 133)
HSL	hsl(223, 57%, 33%)
HSV	hsv(223, 73%, 52%)
CMYK	cmyk(72.9%, 52.6%, 0%, 47.8%)
CIE-LAB	lab(28.44, 15.37, -42.35)
CIE-LCH	lch(28.44, 45.05, 289.95°)
OKLab	oklab(38.86% -0.0101 -0.1217)
OKLCH	oklch(38.86% 0.122 265.2)
XYZ	xyz(6.7372, 5.6228, 22.9160)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F85 #856A24

analogous

#246F85 #243F85 #392485

triadic

#243F85 #85243F #3F8524

tetradic

#243F85 #85246F #856A24 #248539

square

#243F85 #85246F #856A24 #248539

split-complementary

#243F85 #853924 #6F8524

monochromatic

#0A1125 #172855 #243F85 #3156B5 #5376D0

Accessibility & contrast

On white

9.88

#243F85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#243F85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F85

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F85	#FFFFFF	#000000	##FFFFFF
##243F85	1.00	9.88	2.12	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144888

Deuteranopia (green-blind)

#003F84

Tritanopia (blue-blind)

#00505B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243f85;
/* rgb */ color: rgb(36, 63, 133);
/* oklch */ color: oklch(38.9% 0.122 265.2);

Tailwind

colors: {
  custom: {
    50: '#6c73a9',
    500: '#243f85',
    950: '#000000',
  },
}

SCSS

$custom: #243f85;
$custom-light: #6c73a9;
$custom-dark: #000000;

JSON

{
  "hex": "#243f85",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 133
  },
  "hsl": {
    "h": 223.299,
    "s": 57.396,
    "l": 33.137
  },
  "oklch": {
    "l": 0.38857,
    "c": 0.12209,
    "h": 265.2
  },
  "luminance": 0.05624
}

Semantic roles & 50–950 ramp

primary

#243F85

secondary

#B49950

accent

#B647E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #243F85

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

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