#243B77#243B77

#243B77 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.9% C 0.107 H 265.7°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#243B77
RGB	rgb(36, 59, 119)
HSL	hsl(223, 54%, 30%)
HSV	hsv(223, 70%, 47%)
CMYK	cmyk(69.7%, 50.4%, 0%, 53.3%)
CIE-LAB	lab(26.26, 12.65, -37.08)
CIE-LCH	lch(26.26, 39.18, 288.83°)
OKLab	oklab(36.88% -0.0081 -0.1063)
OKLCH	oklch(36.88% 0.107 265.7)
XYZ	xyz(5.6201, 4.8344, 18.0861)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B77 #776024

analogous

#246477 #243B77 #362477

triadic

#243B77 #77243B #3B7724

tetradic

#243B77 #772464 #776024 #247736

square

#243B77 #772464 #776024 #247736

split-complementary

#243B77 #773624 #647724

monochromatic

#080C19 #162448 #243B77 #3252A6 #4C6FC9

Accessibility & contrast

On white

10.68

#243B77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#243B77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B77

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B77	#FFFFFF	#000000	##FFFFFF
##243B77	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4279

Deuteranopia (green-blind)

#073B76

Tritanopia (blue-blind)

#004953

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243b77;
/* rgb */ color: rgb(36, 59, 119);
/* oklch */ color: oklch(36.9% 0.107 265.7);

Tailwind

colors: {
  custom: {
    50: '#69709f',
    500: '#243b77',
    950: '#000000',
  },
}

SCSS

$custom: #243b77;
$custom-light: #69709f;
$custom-dark: #000000;

JSON

{
  "hex": "#243b77",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 119
  },
  "hsl": {
    "h": 223.373,
    "s": 53.548,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36875,
    "c": 0.10657,
    "h": 265.7
  },
  "luminance": 0.04835
}

Semantic roles & 50–950 ramp

primary

#243B77

secondary

#AA904D

accent

#B44BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243B77

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

Preview Lab → · Contrast checker → · Palette generator →