#263FB1#263FB1

#263FB1 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.183 H 267.8°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#263FB1
RGB	rgb(38, 63, 177)
HSL	hsl(229, 65%, 42%)
HSV	hsv(229, 79%, 69%)
CMYK	cmyk(78.5%, 64.4%, 0%, 30.6%)
CIE-LAB	lab(32.12, 32.56, -63.09)
CIE-LCH	lch(32.12, 70.99, 297.30°)
OKLab	oklab(42.76% -0.0069 -0.1825)
OKLCH	oklch(42.76% 0.183 267.8)
XYZ	xyz(10.5099, 7.1402, 42.4107)
Luminance	0.0714 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263FB1 #B19826

analogous

#2684B1 #263FB1 #5326B1

triadic

#263FB1 #B1263F #3FB126

tetradic

#263FB1 #B12684 #B19826 #26B153

square

#263FB1 #B12684 #B19826 #26B153

split-complementary

#263FB1 #B15326 #84B126

monochromatic

#101B4C #1B2D7F #263FB1 #3F5AD6 #7185E0

Accessibility & contrast

On white

8.65

#263FB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#263FB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263FB1

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263FB1	#FFFFFF	#000000	##FFFFFF
##263FB1	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0045AF

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #263fb1;
/* rgb */ color: rgb(38, 63, 177);
/* oklch */ color: oklch(42.8% 0.183 267.8);

Tailwind

colors: {
  custom: {
    50: '#7874c9',
    500: '#263fb1',
    950: '#000000',
  },
}

SCSS

$custom: #263fb1;
$custom-light: #7874c9;
$custom-dark: #000000;

JSON

{
  "hex": "#263fb1",
  "rgb": {
    "r": 38,
    "g": 63,
    "b": 177
  },
  "hsl": {
    "h": 229.209,
    "s": 64.651,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42758,
    "c": 0.18268,
    "h": 267.8
  },
  "luminance": 0.07141
}

Semantic roles & 50–950 ramp

primary

#263FB1

secondary

#C7B76B

accent

#CA40E8

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #263FB1

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

Preview Lab → · Contrast checker → · Palette generator →