#243F86#243F86

#243F86 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 38.9% C 0.124 H 265.4°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#243F86
RGB	rgb(36, 63, 134)
HSL	hsl(223, 58%, 33%)
HSV	hsv(223, 73%, 53%)
CMYK	cmyk(73.1%, 53%, 0%, 47.5%)
CIE-LAB	lab(28.51, 15.77, -42.85)
CIE-LCH	lch(28.51, 45.66, 290.20°)
OKLab	oklab(38.94% -0.01 -0.1232)
OKLCH	oklch(38.94% 0.124 265.4)
XYZ	xyz(6.8066, 5.6506, 23.2816)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F86 #866B24

analogous

#247086 #243F86 #3A2486

triadic

#243F86 #86243F #3F8624

tetradic

#243F86 #862470 #866B24 #24863A

square

#243F86 #862470 #866B24 #24863A

split-complementary

#243F86 #863A24 #708624

monochromatic

#0A1226 #172856 #243F86 #3156B6 #5376D1

Accessibility & contrast

On white

9.86

#243F86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#243F86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F86

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F86	#FFFFFF	#000000	##FFFFFF
##243F86	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124889

Deuteranopia (green-blind)

#003F85

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #243f86;
/* rgb */ color: rgb(36, 63, 134);
/* oklch */ color: oklch(38.9% 0.124 265.4);

Tailwind

colors: {
  custom: {
    50: '#6c73aa',
    500: '#243f86',
    950: '#000000',
  },
}

SCSS

$custom: #243f86;
$custom-light: #6c73aa;
$custom-dark: #000000;

JSON

{
  "hex": "#243f86",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 134
  },
  "hsl": {
    "h": 223.469,
    "s": 57.647,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38936,
    "c": 0.12357,
    "h": 265.4
  },
  "luminance": 0.05651
}

Semantic roles & 50–950 ramp

primary

#243F86

secondary

#B59951

accent

#B647E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #243F86

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

Preview Lab → · Contrast checker → · Palette generator →