#243A81#243A81

#243A81 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.4% C 0.123 H 267.2°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#243A81
RGB	rgb(36, 58, 129)
HSL	hsl(226, 56%, 32%)
HSV	hsv(226, 72%, 51%)
CMYK	cmyk(72.1%, 55%, 0%, 49.4%)
CIE-LAB	lab(26.69, 17.27, -42.67)
CIE-LCH	lch(26.69, 46.04, 292.03°)
OKLab	oklab(37.44% -0.0059 -0.1227)
OKLCH	oklch(37.44% 0.123 267.2)
XYZ	xyz(6.2017, 4.9855, 21.4001)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A81 #816B24

analogous

#246981 #243A81 #3C2481

triadic

#243A81 #81243A #3A8124

tetradic

#243A81 #812469 #816B24 #24813C

square

#243A81 #812469 #816B24 #24813C

split-complementary

#243A81 #813C24 #698124

monochromatic

#090F21 #172451 #243A81 #3150B1 #516FCE

Accessibility & contrast

On white

10.51

#243A81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#243A81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A81

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A81	#FFFFFF	#000000	##FFFFFF
##243A81	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074483

Deuteranopia (green-blind)

#003B80

Tritanopia (blue-blind)

#004B57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243a81;
/* rgb */ color: rgb(36, 58, 129);
/* oklch */ color: oklch(37.4% 0.123 267.2);

Tailwind

colors: {
  custom: {
    50: '#6b6fa6',
    500: '#243a81',
    950: '#000000',
  },
}

SCSS

$custom: #243a81;
$custom-light: #6b6fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#243a81",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 129
  },
  "hsl": {
    "h": 225.806,
    "s": 56.364,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37439,
    "c": 0.12287,
    "h": 267.2
  },
  "luminance": 0.04986
}

Semantic roles & 50–950 ramp

primary

#243A81

secondary

#B29B4E

accent

#BC48E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243A81

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

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