#243F88#243F88

#243F88 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.1% C 0.126 H 265.6°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#243F88
RGB	rgb(36, 63, 136)
HSL	hsl(224, 58%, 34%)
HSV	hsv(224, 74%, 53%)
CMYK	cmyk(73.5%, 53.7%, 0%, 46.7%)
CIE-LAB	lab(28.66, 16.55, -43.85)
CIE-LCH	lch(28.66, 46.87, 290.68°)
OKLab	oklab(39.1% -0.0098 -0.1261)
OKLCH	oklch(39.1% 0.126 265.6)
XYZ	xyz(6.9474, 5.7069, 24.0232)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F88 #886D24

analogous

#247188 #243F88 #3B2488

triadic

#243F88 #88243F #3F8824

tetradic

#243F88 #882471 #886D24 #24883B

square

#243F88 #882471 #886D24 #24883B

split-complementary

#243F88 #883B24 #718824

monochromatic

#0A1227 #172958 #243F88 #3155B8 #5576D2

Accessibility & contrast

On white

9.81

#243F88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#243F88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F88

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F88	#FFFFFF	#000000	##FFFFFF
##243F88	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E488B

Deuteranopia (green-blind)

#003F87

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #243f88;
/* rgb */ color: rgb(36, 63, 136);
/* oklch */ color: oklch(39.1% 0.126 265.6);

Tailwind

colors: {
  custom: {
    50: '#6d73ab',
    500: '#243f88',
    950: '#000000',
  },
}

SCSS

$custom: #243f88;
$custom-light: #6d73ab;
$custom-dark: #000000;

JSON

{
  "hex": "#243f88",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 136
  },
  "hsl": {
    "h": 223.8,
    "s": 58.14,
    "l": 33.725
  },
  "oklch": {
    "l": 0.39095,
    "c": 0.12649,
    "h": 265.6
  },
  "luminance": 0.05708
}

Semantic roles & 50–950 ramp

primary

#243F88

secondary

#B69B52

accent

#B846E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #243F88

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

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