#243E8A#243E8A

#243E8A is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.0% C 0.131 H 266.2°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#243E8A
RGB	rgb(36, 62, 138)
HSL	hsl(225, 59%, 34%)
HSV	hsv(225, 74%, 54%)
CMYK	cmyk(73.9%, 55.1%, 0%, 45.9%)
CIE-LAB	lab(28.52, 18.03, -45.31)
CIE-LCH	lch(28.52, 48.77, 291.70°)
OKLab	oklab(39.04% -0.0087 -0.1304)
OKLCH	oklch(39.04% 0.131 266.2)
XYZ	xyz(7.0360, 5.6546, 24.7605)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E8A #8A7024

analogous

#24718A #243E8A #3D248A

triadic

#243E8A #8A243E #3E8A24

tetradic

#243E8A #8A2471 #8A7024 #248A3D

square

#243E8A #8A2471 #8A7024 #248A3D

split-complementary

#243E8A #8A3D24 #718A24

monochromatic

#0B1229 #172859 #243E8A #3154BB #5676D3

Accessibility & contrast

On white

9.85

#243E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#243E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E8A

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E8A	#FFFFFF	#000000	##FFFFFF
##243E8A	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04488D

Deuteranopia (green-blind)

#003F88

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243e8a;
/* rgb */ color: rgb(36, 62, 138);
/* oklch */ color: oklch(39.0% 0.131 266.2);

Tailwind

colors: {
  custom: {
    50: '#6d72ad',
    500: '#243e8a',
    950: '#000000',
  },
}

SCSS

$custom: #243e8a;
$custom-light: #6d72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#243e8a",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 138
  },
  "hsl": {
    "h": 224.706,
    "s": 58.621,
    "l": 34.118
  },
  "oklch": {
    "l": 0.39038,
    "c": 0.13071,
    "h": 266.2
  },
  "luminance": 0.05655
}

Semantic roles & 50–950 ramp

primary

#243E8A

secondary

#B79D53

accent

#BA46E2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #243E8A

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

Preview Lab → · Contrast checker → · Palette generator →