#243A88#243A88

#243A88 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.133 H 267.7°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#243A88
RGB	rgb(36, 58, 136)
HSL	hsl(227, 58%, 34%)
HSV	hsv(227, 74%, 53%)
CMYK	cmyk(73.5%, 57.4%, 0%, 46.7%)
CIE-LAB	lab(27.24, 20.01, -46.16)
CIE-LCH	lch(27.24, 50.31, 293.43°)
OKLab	oklab(38.02% -0.0054 -0.133)
OKLCH	oklch(38.02% 0.133 267.7)
XYZ	xyz(6.6830, 5.1781, 23.9350)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A88 #887224

analogous

#246C88 #243A88 #402488

triadic

#243A88 #88243A #3A8824

tetradic

#243A88 #88246C #887224 #248840

square

#243A88 #88246C #887224 #248840

split-complementary

#243A88 #884024 #6C8824

monochromatic

#0A1127 #172558 #243A88 #314FB8 #5570D2

Accessibility & contrast

On white

10.32

#243A88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#243A88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A88

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A88	#FFFFFF	#000000	##FFFFFF
##243A88	1.00	10.32	2.04	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458B

Deuteranopia (green-blind)

#003C86

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243a88;
/* rgb */ color: rgb(36, 58, 136);
/* oklch */ color: oklch(38.0% 0.133 267.7);

Tailwind

colors: {
  custom: {
    50: '#6d6fab',
    500: '#243a88',
    950: '#000000',
  },
}

SCSS

$custom: #243a88;
$custom-light: #6d6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#243a88",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 136
  },
  "hsl": {
    "h": 226.8,
    "s": 58.14,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38019,
    "c": 0.13309,
    "h": 267.7
  },
  "luminance": 0.05179
}

Semantic roles & 50–950 ramp

primary

#243A88

secondary

#B6A052

accent

#BF46E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243A88

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

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