#243E88#243E88

#243E88 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.9% C 0.128 H 266.0°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#243E88
RGB	rgb(36, 62, 136)
HSL	hsl(224, 58%, 34%)
HSV	hsv(224, 74%, 53%)
CMYK	cmyk(73.5%, 54.4%, 0%, 46.7%)
CIE-LAB	lab(28.37, 17.24, -44.32)
CIE-LCH	lch(28.37, 47.55, 291.26°)
OKLab	oklab(38.88% -0.0089 -0.1275)
OKLCH	oklch(38.88% 0.128 266)
XYZ	xyz(6.8926, 5.5972, 24.0049)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E88 #886E24

analogous

#247088 #243E88 #3C2488

triadic

#243E88 #88243E #3E8824

tetradic

#243E88 #882470 #886E24 #24883C

square

#243E88 #882470 #886E24 #24883C

split-complementary

#243E88 #883C24 #708824

monochromatic

#0A1227 #172858 #243E88 #3154B8 #5575D2

Accessibility & contrast

On white

9.91

#243E88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#243E88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E88

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E88	#FFFFFF	#000000	##FFFFFF
##243E88	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A488B

Deuteranopia (green-blind)

#003F87

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243e88;
/* rgb */ color: rgb(36, 62, 136);
/* oklch */ color: oklch(38.9% 0.128 266.0);

Tailwind

colors: {
  custom: {
    50: '#6d72ab',
    500: '#243e88',
    950: '#000000',
  },
}

SCSS

$custom: #243e88;
$custom-light: #6d72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#243e88",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 136
  },
  "hsl": {
    "h": 224.4,
    "s": 58.14,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38876,
    "c": 0.1278,
    "h": 266
  },
  "luminance": 0.05598
}

Semantic roles & 50–950 ramp

primary

#243E88

secondary

#B69C52

accent

#B946E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #243E88

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

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