#243D85#243D85

#243D85 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.125 H 266.2°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#243D85
RGB	rgb(36, 61, 133)
HSL	hsl(225, 57%, 33%)
HSV	hsv(225, 73%, 52%)
CMYK	cmyk(72.9%, 54.1%, 0%, 47.8%)
CIE-LAB	lab(27.86, 16.76, -43.28)
CIE-LCH	lch(27.86, 46.41, 291.16°)
OKLab	oklab(38.42% -0.0083 -0.1245)
OKLCH	oklch(38.42% 0.125 266.2)
XYZ	xyz(6.6285, 5.4053, 22.8798)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D85 #856C24

analogous

#246D85 #243D85 #3B2485

triadic

#243D85 #85243D #3D8524

tetradic

#243D85 #85246D #856C24 #24853B

square

#243D85 #85246D #856C24 #24853B

split-complementary

#243D85 #853B24 #6D8524

monochromatic

#0A1125 #172755 #243D85 #3153B5 #5373D0

Accessibility & contrast

On white

10.09

#243D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#243D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D85

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D85	#FFFFFF	#000000	##FFFFFF
##243D85	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4688

Deuteranopia (green-blind)

#003E84

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243d85;
/* rgb */ color: rgb(36, 61, 133);
/* oklch */ color: oklch(38.4% 0.125 266.2);

Tailwind

colors: {
  custom: {
    50: '#6c72a9',
    500: '#243d85',
    950: '#000000',
  },
}

SCSS

$custom: #243d85;
$custom-light: #6c72a9;
$custom-dark: #000000;

JSON

{
  "hex": "#243d85",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 133
  },
  "hsl": {
    "h": 224.536,
    "s": 57.396,
    "l": 33.137
  },
  "oklch": {
    "l": 0.38416,
    "c": 0.12475,
    "h": 266.2
  },
  "luminance": 0.05406
}

Semantic roles & 50–950 ramp

primary

#243D85

secondary

#B49B50

accent

#B947E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #243D85

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

Preview Lab → · Contrast checker → · Palette generator →