#243F84#243F84

#243F84 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.121 H 265.1°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#243F84
RGB	rgb(36, 63, 132)
HSL	hsl(223, 57%, 33%)
HSV	hsv(223, 73%, 52%)
CMYK	cmyk(72.7%, 52.3%, 0%, 48.2%)
CIE-LAB	lab(28.37, 14.98, -41.84)
CIE-LCH	lch(28.37, 44.44, 289.70°)
OKLab	oklab(38.78% -0.0102 -0.1202)
OKLCH	oklch(38.78% 0.121 265.1)
XYZ	xyz(6.6685, 5.5953, 22.5539)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F84 #846924

analogous

#246F84 #243F84 #392484

triadic

#243F84 #84243F #3F8424

tetradic

#243F84 #84246F #846924 #248439

square

#243F84 #84246F #846924 #248439

split-complementary

#243F84 #843924 #6F8424

monochromatic

#0A1124 #172854 #243F84 #3156B4 #5276D0

Accessibility & contrast

On white

9.91

#243F84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#243F84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F84

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F84	#FFFFFF	#000000	##FFFFFF
##243F84	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154886

Deuteranopia (green-blind)

#003F83

Tritanopia (blue-blind)

#004F5B

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243f84;
/* rgb */ color: rgb(36, 63, 132);
/* oklch */ color: oklch(38.8% 0.121 265.1);

Tailwind

colors: {
  custom: {
    50: '#6c73a8',
    500: '#243f84',
    950: '#000000',
  },
}

SCSS

$custom: #243f84;
$custom-light: #6c73a8;
$custom-dark: #000000;

JSON

{
  "hex": "#243f84",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 132
  },
  "hsl": {
    "h": 223.125,
    "s": 57.143,
    "l": 32.941
  },
  "oklch": {
    "l": 0.38779,
    "c": 0.12063,
    "h": 265.1
  },
  "luminance": 0.05596
}

Semantic roles & 50–950 ramp

primary

#243F84

secondary

#B49850

accent

#B547E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #243F84

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

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