#243C85#243C85

#243C85 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.126 H 266.6°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#243C85
RGB	rgb(36, 60, 133)
HSL	hsl(225, 57%, 33%)
HSV	hsv(225, 73%, 52%)
CMYK	cmyk(72.9%, 54.9%, 0%, 47.8%)
CIE-LAB	lab(27.57, 17.45, -43.75)
CIE-LCH	lch(27.57, 47.10, 291.74°)
OKLab	oklab(38.2% -0.0074 -0.1259)
OKLCH	oklch(38.2% 0.126 266.6)
XYZ	xyz(6.5756, 5.2996, 22.8621)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C85 #856D24

analogous

#246C85 #243C85 #3D2485

triadic

#243C85 #85243C #3C8524

tetradic

#243C85 #85246C #856D24 #24853D

square

#243C85 #85246C #856D24 #24853D

split-complementary

#243C85 #853D24 #6C8524

monochromatic

#0A1125 #172655 #243C85 #3152B5 #5372D0

Accessibility & contrast

On white

10.19

#243C85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#243C85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C85

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C85	#FFFFFF	#000000	##FFFFFF
##243C85	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074688

Deuteranopia (green-blind)

#003D84

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243c85;
/* rgb */ color: rgb(36, 60, 133);
/* oklch */ color: oklch(38.2% 0.126 266.6);

Tailwind

colors: {
  custom: {
    50: '#6c71a9',
    500: '#243c85',
    950: '#000000',
  },
}

SCSS

$custom: #243c85;
$custom-light: #6c71a9;
$custom-dark: #000000;

JSON

{
  "hex": "#243c85",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 133
  },
  "hsl": {
    "h": 225.155,
    "s": 57.396,
    "l": 33.137
  },
  "oklch": {
    "l": 0.38199,
    "c": 0.12608,
    "h": 266.6
  },
  "luminance": 0.053
}

Semantic roles & 50–950 ramp

primary

#243C85

secondary

#B49C50

accent

#BB47E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #243C85

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

Preview Lab → · Contrast checker → · Palette generator →