#263B8B#263B8B

#263B8B is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.135 H 268.2°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#263B8B
RGB	rgb(38, 59, 139)
HSL	hsl(228, 57%, 35%)
HSV	hsv(228, 73%, 55%)
CMYK	cmyk(72.7%, 57.6%, 0%, 45.5%)
CIE-LAB	lab(27.85, 20.77, -47.01)
CIE-LCH	lch(27.85, 51.40, 293.84°)
OKLab	oklab(38.59% -0.0042 -0.1354)
OKLCH	oklch(38.59% 0.135 268.2)
XYZ	xyz(7.0219, 5.4034, 25.0940)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263B8B #8B7626

analogous

#266D8B #263B8B #44268B

triadic

#263B8B #8B263B #3B8B26

tetradic

#263B8B #8B266D #8B7626 #268B44

square

#263B8B #8B266D #8B7626 #268B44

split-complementary

#263B8B #8B4426 #6D8B26

monochromatic

#0C122B #19275B #263B8B #334FBB #5A73D2

Accessibility & contrast

On white

10.09

#263B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#263B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263B8B

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263B8B	#FFFFFF	#000000	##FFFFFF
##263B8B	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478E

Deuteranopia (green-blind)

#003D89

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #263b8b;
/* rgb */ color: rgb(38, 59, 139);
/* oklch */ color: oklch(38.6% 0.135 268.2);

Tailwind

colors: {
  custom: {
    50: '#6f70ae',
    500: '#263b8b',
    950: '#000000',
  },
}

SCSS

$custom: #263b8b;
$custom-light: #6f70ae;
$custom-dark: #000000;

JSON

{
  "hex": "#263b8b",
  "rgb": {
    "r": 38,
    "g": 59,
    "b": 139
  },
  "hsl": {
    "h": 227.525,
    "s": 57.062,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38586,
    "c": 0.13548,
    "h": 268.2
  },
  "luminance": 0.05404
}

Semantic roles & 50–950 ramp

primary

#263B8B

secondary

#B7A356

accent

#C147E0

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #263B8B

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

Preview Lab → · Contrast checker → · Palette generator →