#243D87#243D87

#243D87 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.6% C 0.128 H 266.4°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#243D87
RGB	rgb(36, 61, 135)
HSL	hsl(225, 58%, 34%)
HSV	hsv(225, 73%, 53%)
CMYK	cmyk(73.3%, 54.8%, 0%, 47.1%)
CIE-LAB	lab(28.01, 17.54, -44.28)
CIE-LCH	lch(28.01, 47.63, 291.61°)
OKLab	oklab(38.58% -0.0081 -0.1274)
OKLCH	oklch(38.58% 0.128 266.4)
XYZ	xyz(6.7679, 5.4611, 23.6144)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D87 #876E24

analogous

#246E87 #243D87 #3C2487

triadic

#243D87 #87243D #3D8724

tetradic

#243D87 #87246E #876E24 #24873C

square

#243D87 #87246E #876E24 #24873C

split-complementary

#243D87 #873C24 #6E8724

monochromatic

#0A1126 #172757 #243D87 #3153B7 #5474D1

Accessibility & contrast

On white

10.04

#243D87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#243D87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D87

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D87	#FFFFFF	#000000	##FFFFFF
##243D87	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07478A

Deuteranopia (green-blind)

#003E86

Tritanopia (blue-blind)

#004F5C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243d87;
/* rgb */ color: rgb(36, 61, 135);
/* oklch */ color: oklch(38.6% 0.128 266.4);

Tailwind

colors: {
  custom: {
    50: '#6d72ab',
    500: '#243d87',
    950: '#000000',
  },
}

SCSS

$custom: #243d87;
$custom-light: #6d72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#243d87",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 135
  },
  "hsl": {
    "h": 224.848,
    "s": 57.895,
    "l": 33.529
  },
  "oklch": {
    "l": 0.38578,
    "c": 0.12767,
    "h": 266.4
  },
  "luminance": 0.05462
}

Semantic roles & 50–950 ramp

primary

#243D87

secondary

#B59C51

accent

#BA47E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243D87

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

Preview Lab → · Contrast checker → · Palette generator →