#263B8D#263B8D

#263B8D is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.138 H 268.3°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#263B8D
RGB	rgb(38, 59, 141)
HSL	hsl(228, 58%, 35%)
HSV	hsv(228, 73%, 55%)
CMYK	cmyk(73%, 58.2%, 0%, 44.7%)
CIE-LAB	lab(28.01, 21.55, -47.99)
CIE-LCH	lch(28.01, 52.60, 294.18°)
OKLab	oklab(38.76% -0.0041 -0.1383)
OKLCH	oklch(38.76% 0.138 268.3)
XYZ	xyz(7.1694, 5.4624, 25.8706)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263B8D #8D7826

analogous

#266E8D #263B8D #44268D

triadic

#263B8D #8D263B #3B8D26

tetradic

#263B8D #8D266E #8D7826 #268D44

square

#263B8D #8D266E #8D7826 #268D44

split-complementary

#263B8D #8D4426 #6E8D26

monochromatic

#0C132D #19275D #263B8D #334FBD #5B73D3

Accessibility & contrast

On white

10.04

#263B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#263B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263B8D

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263B8D	#FFFFFF	#000000	##FFFFFF
##263B8D	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #263b8d;
/* rgb */ color: rgb(38, 59, 141);
/* oklch */ color: oklch(38.8% 0.138 268.3);

Tailwind

colors: {
  custom: {
    50: '#6f70af',
    500: '#263b8d',
    950: '#000000',
  },
}

SCSS

$custom: #263b8d;
$custom-light: #6f70af;
$custom-dark: #000000;

JSON

{
  "hex": "#263b8d",
  "rgb": {
    "r": 38,
    "g": 59,
    "b": 141
  },
  "hsl": {
    "h": 227.767,
    "s": 57.542,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38755,
    "c": 0.13836,
    "h": 268.3
  },
  "luminance": 0.05463
}

Semantic roles & 50–950 ramp

primary

#263B8D

secondary

#B8A457

accent

#C147E1

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #263B8D

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

Preview Lab → · Contrast checker → · Palette generator →