#243E8D#243E8D

#243E8D is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.3% C 0.135 H 266.4°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#243E8D
RGB	rgb(36, 62, 141)
HSL	hsl(225, 59%, 35%)
HSV	hsv(225, 74%, 55%)
CMYK	cmyk(74.5%, 56%, 0%, 44.7%)
CIE-LAB	lab(28.75, 19.21, -46.79)
CIE-LCH	lch(28.75, 50.58, 292.32°)
OKLab	oklab(39.28% -0.0085 -0.1348)
OKLCH	oklch(39.28% 0.135 266.4)
XYZ	xyz(7.2562, 5.7426, 25.9202)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E8D #8D7324

analogous

#24738D #243E8D #3F248D

triadic

#243E8D #8D243E #3E8D24

tetradic

#243E8D #8D2473 #8D7324 #248D3F

square

#243E8D #8D2473 #8D7324 #248D3F

split-complementary

#243E8D #8D3F24 #738D24

monochromatic

#0B132B #18295C #243E8D #3053BE #5776D4

Accessibility & contrast

On white

9.77

#243E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#243E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E8D

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E8D	#FFFFFF	#000000	##FFFFFF
##243E8D	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004990

Deuteranopia (green-blind)

#003F8B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #243e8d;
/* rgb */ color: rgb(36, 62, 141);
/* oklch */ color: oklch(39.3% 0.135 266.4);

Tailwind

colors: {
  custom: {
    50: '#6e72af',
    500: '#243e8d',
    950: '#000000',
  },
}

SCSS

$custom: #243e8d;
$custom-light: #6e72af;
$custom-dark: #000000;

JSON

{
  "hex": "#243e8d",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 141
  },
  "hsl": {
    "h": 225.143,
    "s": 59.322,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39285,
    "c": 0.13504,
    "h": 266.4
  },
  "luminance": 0.05743
}

Semantic roles & 50–950 ramp

primary

#243E8D

secondary

#B8A054

accent

#BC45E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #243E8D

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

Preview Lab → · Contrast checker → · Palette generator →