#243B85#243B85

#243B85 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.127 H 267.1°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#243B85
RGB	rgb(36, 59, 133)
HSL	hsl(226, 57%, 33%)
HSV	hsv(226, 73%, 52%)
CMYK	cmyk(72.9%, 55.6%, 0%, 47.8%)
CIE-LAB	lab(27.29, 18.14, -44.21)
CIE-LCH	lch(27.29, 47.79, 292.31°)
OKLab	oklab(37.98% -0.0065 -0.1272)
OKLCH	oklch(37.98% 0.127 267.1)
XYZ	xyz(6.5237, 5.1958, 22.8448)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B85 #856E24

analogous

#246B85 #243B85 #3D2485

triadic

#243B85 #85243B #3B8524

tetradic

#243B85 #85246B #856E24 #24853D

square

#243B85 #85246B #856E24 #24853D

split-complementary

#243B85 #853D24 #6B8524

monochromatic

#0A1025 #172655 #243B85 #3150B5 #5371D0

Accessibility & contrast

On white

10.30

#243B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#243B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B85

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B85	#FFFFFF	#000000	##FFFFFF
##243B85	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#024588

Deuteranopia (green-blind)

#003C84

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243b85;
/* rgb */ color: rgb(36, 59, 133);
/* oklch */ color: oklch(38.0% 0.127 267.1);

Tailwind

colors: {
  custom: {
    50: '#6c70a9',
    500: '#243b85',
    950: '#000000',
  },
}

SCSS

$custom: #243b85;
$custom-light: #6c70a9;
$custom-dark: #000000;

JSON

{
  "hex": "#243b85",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 133
  },
  "hsl": {
    "h": 225.773,
    "s": 57.396,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37982,
    "c": 0.12741,
    "h": 267.1
  },
  "luminance": 0.05196
}

Semantic roles & 50–950 ramp

primary

#243B85

secondary

#B49D50

accent

#BC47E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #243B85

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

Preview Lab → · Contrast checker → · Palette generator →