#243E8F#243E8F

#243E8F is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.138 H 266.5°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#243E8F
RGB	rgb(36, 62, 143)
HSL	hsl(225, 60%, 35%)
HSV	hsv(225, 75%, 56%)
CMYK	cmyk(74.8%, 56.6%, 0%, 43.9%)
CIE-LAB	lab(28.91, 19.99, -47.77)
CIE-LCH	lch(28.91, 51.78, 292.71°)
OKLab	oklab(39.45% -0.0083 -0.1377)
OKLCH	oklch(39.45% 0.138 266.5)
XYZ	xyz(7.4064, 5.8027, 26.7110)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E8F #8F7524

analogous

#24738F #243E8F #40248F

triadic

#243E8F #8F243E #3E8F24

tetradic

#243E8F #8F2473 #8F7524 #248F40

square

#243E8F #8F2473 #8F7524 #248F40

split-complementary

#243E8F #8F4024 #738F24

monochromatic

#0B142D #18295E #243E8F #3053C0 #5877D5

Accessibility & contrast

On white

9.72

#243E8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#243E8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E8F

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E8F	#FFFFFF	#000000	##FFFFFF
##243E8F	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004992

Deuteranopia (green-blind)

#003F8D

Tritanopia (blue-blind)

#005260

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #243e8f;
/* rgb */ color: rgb(36, 62, 143);
/* oklch */ color: oklch(39.5% 0.138 266.5);

Tailwind

colors: {
  custom: {
    50: '#6e72b0',
    500: '#243e8f',
    950: '#000000',
  },
}

SCSS

$custom: #243e8f;
$custom-light: #6e72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#243e8f",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 143
  },
  "hsl": {
    "h": 225.421,
    "s": 59.777,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39451,
    "c": 0.13791,
    "h": 266.5
  },
  "luminance": 0.05803
}

Semantic roles & 50–950 ramp

primary

#243E8F

secondary

#B9A155

accent

#BD45E3

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080811

muted

#7B7B80

Preview Lab

Preview with #243E8F

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

Preview Lab → · Contrast checker → · Palette generator →