#243F87#243F87

#243F87 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.0% C 0.125 H 265.5°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#243F87
RGB	rgb(36, 63, 135)
HSL	hsl(224, 58%, 34%)
HSV	hsv(224, 73%, 53%)
CMYK	cmyk(73.3%, 53.3%, 0%, 47.1%)
CIE-LAB	lab(28.59, 16.16, -43.35)
CIE-LCH	lch(28.59, 46.26, 290.45°)
OKLab	oklab(39.02% -0.0099 -0.1246)
OKLCH	oklch(39.02% 0.125 265.5)
XYZ	xyz(6.8767, 5.6786, 23.6506)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F87 #876C24

analogous

#247087 #243F87 #3A2487

triadic

#243F87 #87243F #3F8724

tetradic

#243F87 #872470 #876C24 #24873A

square

#243F87 #872470 #876C24 #24873A

split-complementary

#243F87 #873A24 #708724

monochromatic

#0A1226 #172857 #243F87 #3156B7 #5476D1

Accessibility & contrast

On white

9.83

#243F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#243F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F87

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F87	#FFFFFF	#000000	##FFFFFF
##243F87	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10488A

Deuteranopia (green-blind)

#003F86

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243f87;
/* rgb */ color: rgb(36, 63, 135);
/* oklch */ color: oklch(39.0% 0.125 265.5);

Tailwind

colors: {
  custom: {
    50: '#6d73aa',
    500: '#243f87',
    950: '#000000',
  },
}

SCSS

$custom: #243f87;
$custom-light: #6d73aa;
$custom-dark: #000000;

JSON

{
  "hex": "#243f87",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 135
  },
  "hsl": {
    "h": 223.636,
    "s": 57.895,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39015,
    "c": 0.12502,
    "h": 265.5
  },
  "luminance": 0.05679
}

Semantic roles & 50–950 ramp

primary

#243F87

secondary

#B59A51

accent

#B747E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #243F87

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

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