#263F81#263F81

#263F81 is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.6% C 0.116 H 265.7°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#263F81
RGB	rgb(38, 63, 129)
HSL	hsl(224, 54%, 33%)
HSV	hsv(224, 71%, 51%)
CMYK	cmyk(70.5%, 51.2%, 0%, 49.4%)
CIE-LAB	lab(28.25, 14.13, -40.15)
CIE-LCH	lch(28.25, 42.57, 289.38°)
OKLab	oklab(38.65% -0.0088 -0.1152)
OKLCH	oklch(38.65% 0.116 265.7)
XYZ	xyz(6.5379, 5.5514, 21.4916)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263F81 #816826

analogous

#266D81 #263F81 #3A2681

triadic

#263F81 #81263F #3F8126

tetradic

#263F81 #81266D #816826 #26813A

square

#263F81 #81266D #816826 #26813A

split-complementary

#263F81 #813A26 #6D8126

monochromatic

#0A1122 #182852 #263F81 #3456B0 #5576CD

Accessibility & contrast

On white

9.95

#263F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#263F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263F81

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263F81	#FFFFFF	#000000	##FFFFFF
##263F81	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4783

Deuteranopia (green-blind)

#003F80

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #263f81;
/* rgb */ color: rgb(38, 63, 129);
/* oklch */ color: oklch(38.6% 0.116 265.7);

Tailwind

colors: {
  custom: {
    50: '#6c73a6',
    500: '#263f81',
    950: '#000000',
  },
}

SCSS

$custom: #263f81;
$custom-light: #6c73a6;
$custom-dark: #000000;

JSON

{
  "hex": "#263f81",
  "rgb": {
    "r": 38,
    "g": 63,
    "b": 129
  },
  "hsl": {
    "h": 223.516,
    "s": 54.491,
    "l": 32.745
  },
  "oklch": {
    "l": 0.38648,
    "c": 0.11551,
    "h": 265.7
  },
  "luminance": 0.05552
}

Semantic roles & 50–950 ramp

primary

#263F81

secondary

#B19751

accent

#B54ADE

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #263F81

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

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