#263C8B#263C8B

#263C8B is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.134 H 267.8°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#263C8B
RGB	rgb(38, 60, 139)
HSL	hsl(227, 57%, 35%)
HSV	hsv(227, 73%, 55%)
CMYK	cmyk(72.7%, 56.8%, 0%, 45.5%)
CIE-LAB	lab(28.13, 20.09, -46.56)
CIE-LCH	lch(28.13, 50.71, 293.34°)
OKLab	oklab(38.8% -0.005 -0.1341)
OKLCH	oklch(38.8% 0.134 267.8)
XYZ	xyz(7.0738, 5.5071, 25.1113)
Luminance	0.0551 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263C8B #8B7526

analogous

#266E8B #263C8B #43268B

triadic

#263C8B #8B263C #3C8B26

tetradic

#263C8B #8B266E #8B7526 #268B43

square

#263C8B #8B266E #8B7526 #268B43

split-complementary

#263C8B #8B4326 #6E8B26

monochromatic

#0C132B #19275B #263C8B #3351BB #5A74D2

Accessibility & contrast

On white

9.99

#263C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#263C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263C8B

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263C8B	#FFFFFF	#000000	##FFFFFF
##263C8B	1.00	9.99	2.10	9.99
#FFFFFF	9.99	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478E

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #263c8b;
/* rgb */ color: rgb(38, 60, 139);
/* oklch */ color: oklch(38.8% 0.134 267.8);

Tailwind

colors: {
  custom: {
    50: '#6e71ad',
    500: '#263c8b',
    950: '#000000',
  },
}

SCSS

$custom: #263c8b;
$custom-light: #6e71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#263c8b",
  "rgb": {
    "r": 38,
    "g": 60,
    "b": 139
  },
  "hsl": {
    "h": 226.931,
    "s": 57.062,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38795,
    "c": 0.13417,
    "h": 267.8
  },
  "luminance": 0.05508
}

Semantic roles & 50–950 ramp

primary

#263C8B

secondary

#B7A256

accent

#BF47E0

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #263C8B

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

Preview Lab → · Contrast checker → · Palette generator →