#263A8B#263A8B

#263A8B is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.4% C 0.137 H 268.6°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#263A8B
RGB	rgb(38, 58, 139)
HSL	hsl(228, 57%, 35%)
HSV	hsv(228, 73%, 55%)
CMYK	cmyk(72.7%, 58.3%, 0%, 45.5%)
CIE-LAB	lab(27.58, 21.46, -47.46)
CIE-LCH	lch(27.58, 52.09, 294.33°)
OKLab	oklab(38.38% -0.0033 -0.1368)
OKLCH	oklch(38.38% 0.137 268.6)
XYZ	xyz(6.9710, 5.3016, 25.0770)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263A8B #8B7726

analogous

#266C8B #263A8B #45268B

triadic

#263A8B #8B263A #3A8B26

tetradic

#263A8B #8B266C #8B7726 #268B45

square

#263A8B #8B266C #8B7726 #268B45

split-complementary

#263A8B #8B4526 #6C8B26

monochromatic

#0C122B #19265B #263A8B #334EBB #5A71D2

Accessibility & contrast

On white

10.19

#263A8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#263A8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263A8B

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263A8B	#FFFFFF	#000000	##FFFFFF
##263A8B	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468E

Deuteranopia (green-blind)

#003D89

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #263a8b;
/* rgb */ color: rgb(38, 58, 139);
/* oklch */ color: oklch(38.4% 0.137 268.6);

Tailwind

colors: {
  custom: {
    50: '#6f6fae',
    500: '#263a8b',
    950: '#000000',
  },
}

SCSS

$custom: #263a8b;
$custom-light: #6f6fae;
$custom-dark: #000000;

JSON

{
  "hex": "#263a8b",
  "rgb": {
    "r": 38,
    "g": 58,
    "b": 139
  },
  "hsl": {
    "h": 228.119,
    "s": 57.062,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38378,
    "c": 0.1368,
    "h": 268.6
  },
  "luminance": 0.05302
}

Semantic roles & 50–950 ramp

primary

#263A8B

secondary

#B7A356

accent

#C247E0

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #263A8B

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

Preview Lab → · Contrast checker → · Palette generator →