#243C84#243C84

#243C84 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.1% C 0.125 H 266.6°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#243C84
RGB	rgb(36, 60, 132)
HSL	hsl(225, 57%, 33%)
HSV	hsv(225, 73%, 52%)
CMYK	cmyk(72.7%, 54.5%, 0%, 48.2%)
CIE-LAB	lab(27.50, 17.06, -43.25)
CIE-LCH	lch(27.50, 46.49, 291.52°)
OKLab	oklab(38.12% -0.0075 -0.1244)
OKLCH	oklch(38.12% 0.125 266.6)
XYZ	xyz(6.5068, 5.2721, 22.5000)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C84 #846C24

analogous

#246C84 #243C84 #3C2484

triadic

#243C84 #84243C #3C8424

tetradic

#243C84 #84246C #846C24 #24843C

square

#243C84 #84246C #846C24 #24843C

split-complementary

#243C84 #843C24 #6C8424

monochromatic

#0A1024 #172654 #243C84 #3152B4 #5272D0

Accessibility & contrast

On white

10.22

#243C84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#243C84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C84

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C84	#FFFFFF	#000000	##FFFFFF
##243C84	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A4687

Deuteranopia (green-blind)

#003D83

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243c84;
/* rgb */ color: rgb(36, 60, 132);
/* oklch */ color: oklch(38.1% 0.125 266.6);

Tailwind

colors: {
  custom: {
    50: '#6c71a8',
    500: '#243c84',
    950: '#000000',
  },
}

SCSS

$custom: #243c84;
$custom-light: #6c71a8;
$custom-dark: #000000;

JSON

{
  "hex": "#243c84",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 132
  },
  "hsl": {
    "h": 225,
    "s": 57.143,
    "l": 32.941
  },
  "oklch": {
    "l": 0.38118,
    "c": 0.12461,
    "h": 266.6
  },
  "luminance": 0.05273
}

Semantic roles & 50–950 ramp

primary

#243C84

secondary

#B49B50

accent

#BA47E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #243C84

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

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