#243C87#243C87

#243C87 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.129 H 266.8°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#243C87
RGB	rgb(36, 60, 135)
HSL	hsl(225, 58%, 34%)
HSV	hsv(225, 73%, 53%)
CMYK	cmyk(73.3%, 55.6%, 0%, 47.1%)
CIE-LAB	lab(27.72, 18.23, -44.75)
CIE-LCH	lch(27.72, 48.32, 292.17°)
OKLab	oklab(38.36% -0.0072 -0.1288)
OKLCH	oklch(38.36% 0.129 266.8)
XYZ	xyz(6.7151, 5.3554, 23.5968)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C87 #876F24

analogous

#246D87 #243C87 #3D2487

triadic

#243C87 #87243C #3C8724

tetradic

#243C87 #87246D #876F24 #24873D

square

#243C87 #87246D #876F24 #24873D

split-complementary

#243C87 #873D24 #6D8724

monochromatic

#0A1126 #172757 #243C87 #3151B7 #5472D1

Accessibility & contrast

On white

10.14

#243C87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#243C87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C87

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C87	#FFFFFF	#000000	##FFFFFF
##243C87	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02468A

Deuteranopia (green-blind)

#003D86

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #243c87;
/* rgb */ color: rgb(36, 60, 135);
/* oklch */ color: oklch(38.4% 0.129 266.8);

Tailwind

colors: {
  custom: {
    50: '#6d71ab',
    500: '#243c87',
    950: '#000000',
  },
}

SCSS

$custom: #243c87;
$custom-light: #6d71ab;
$custom-dark: #000000;

JSON

{
  "hex": "#243c87",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 135
  },
  "hsl": {
    "h": 225.455,
    "s": 57.895,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38362,
    "c": 0.12899,
    "h": 266.8
  },
  "luminance": 0.05356
}

Semantic roles & 50–950 ramp

primary

#243C87

secondary

#B59D51

accent

#BC47E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243C87

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

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