#243A83#243A83

#243A83 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.126 H 267.4°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#243A83
RGB	rgb(36, 58, 131)
HSL	hsl(226, 57%, 33%)
HSV	hsv(226, 73%, 51%)
CMYK	cmyk(72.5%, 55.7%, 0%, 48.6%)
CIE-LAB	lab(26.85, 18.05, -43.68)
CIE-LCH	lch(26.85, 47.26, 292.46°)
OKLab	oklab(37.6% -0.0058 -0.1257)
OKLCH	oklch(37.6% 0.126 267.4)
XYZ	xyz(6.3359, 5.0392, 22.1071)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A83 #836D24

analogous

#246A83 #243A83 #3D2483

triadic

#243A83 #83243A #3A8324

tetradic

#243A83 #83246A #836D24 #24833D

square

#243A83 #83246A #836D24 #24833D

split-complementary

#243A83 #833D24 #6A8324

monochromatic

#0A0F23 #172553 #243A83 #314FB3 #526FCF

Accessibility & contrast

On white

10.46

#243A83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#243A83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A83

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A83	#FFFFFF	#000000	##FFFFFF
##243A83	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#024486

Deuteranopia (green-blind)

#003B82

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243a83;
/* rgb */ color: rgb(36, 58, 131);
/* oklch */ color: oklch(37.6% 0.126 267.4);

Tailwind

colors: {
  custom: {
    50: '#6c6fa8',
    500: '#243a83',
    950: '#000000',
  },
}

SCSS

$custom: #243a83;
$custom-light: #6c6fa8;
$custom-dark: #000000;

JSON

{
  "hex": "#243a83",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 131
  },
  "hsl": {
    "h": 226.105,
    "s": 56.886,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37602,
    "c": 0.12581,
    "h": 267.4
  },
  "luminance": 0.0504
}

Semantic roles & 50–950 ramp

primary

#243A83

secondary

#B39C4F

accent

#BD48E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #243A83

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

Preview Lab → · Contrast checker → · Palette generator →