#243D83#243D83

#243D83 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.3% C 0.122 H 266.0°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#243D83
RGB	rgb(36, 61, 131)
HSL	hsl(224, 57%, 33%)
HSV	hsv(224, 73%, 51%)
CMYK	cmyk(72.5%, 53.4%, 0%, 48.6%)
CIE-LAB	lab(27.71, 15.97, -42.28)
CIE-LCH	lch(27.71, 45.19, 290.70°)
OKLab	oklab(38.26% -0.0085 -0.1215)
OKLCH	oklch(38.26% 0.122 266)
XYZ	xyz(6.4916, 5.3506, 22.1590)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D83 #836A24

analogous

#246C83 #243D83 #3B2483

triadic

#243D83 #83243D #3D8324

tetradic

#243D83 #83246C #836A24 #24833B

square

#243D83 #83246C #836A24 #24833B

split-complementary

#243D83 #833B24 #6C8324

monochromatic

#0A1023 #172753 #243D83 #3153B3 #5273CF

Accessibility & contrast

On white

10.14

#243D83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#243D83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D83

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D83	#FFFFFF	#000000	##FFFFFF
##243D83	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104685

Deuteranopia (green-blind)

#003D82

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243d83;
/* rgb */ color: rgb(36, 61, 131);
/* oklch */ color: oklch(38.3% 0.122 266.0);

Tailwind

colors: {
  custom: {
    50: '#6c72a8',
    500: '#243d83',
    950: '#000000',
  },
}

SCSS

$custom: #243d83;
$custom-light: #6c72a8;
$custom-dark: #000000;

JSON

{
  "hex": "#243d83",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 131
  },
  "hsl": {
    "h": 224.211,
    "s": 56.886,
    "l": 32.745
  },
  "oklch": {
    "l": 0.38257,
    "c": 0.12181,
    "h": 266
  },
  "luminance": 0.05351
}

Semantic roles & 50–950 ramp

primary

#243D83

secondary

#B3994F

accent

#B848E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #243D83

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

Preview Lab → · Contrast checker → · Palette generator →