#263F8B#263F8B

#263F8B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.4% C 0.130 H 266.6°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#263F8B
RGB	rgb(38, 63, 139)
HSL	hsl(225, 57%, 35%)
HSV	hsv(225, 73%, 55%)
CMYK	cmyk(72.7%, 54.7%, 0%, 45.5%)
CIE-LAB	lab(28.98, 18.03, -45.18)
CIE-LCH	lch(28.98, 48.65, 291.75°)
OKLab	oklab(39.43% -0.0077 -0.13)
OKLCH	oklch(39.43% 0.13 266.6)
XYZ	xyz(7.2354, 5.8304, 25.1652)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263F8B #8B7226

analogous

#26718B #263F8B #40268B

triadic

#263F8B #8B263F #3F8B26

tetradic

#263F8B #8B2671 #8B7226 #268B40

square

#263F8B #8B2671 #8B7226 #268B40

split-complementary

#263F8B #8B4026 #718B26

monochromatic

#0C132B #19295B #263F8B #3355BB #5A77D2

Accessibility & contrast

On white

9.69

#263F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#263F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263F8B

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263F8B	#FFFFFF	#000000	##FFFFFF
##263F8B	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08498E

Deuteranopia (green-blind)

#004089

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #263f8b;
/* rgb */ color: rgb(38, 63, 139);
/* oklch */ color: oklch(39.4% 0.130 266.6);

Tailwind

colors: {
  custom: {
    50: '#6e73ad',
    500: '#263f8b',
    950: '#000000',
  },
}

SCSS

$custom: #263f8b;
$custom-light: #6e73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#263f8b",
  "rgb": {
    "r": 38,
    "g": 63,
    "b": 139
  },
  "hsl": {
    "h": 225.149,
    "s": 57.062,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39434,
    "c": 0.13022,
    "h": 266.6
  },
  "luminance": 0.05831
}

Semantic roles & 50–950 ramp

primary

#263F8B

secondary

#B79F56

accent

#BA47E0

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #263F8B

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

Preview Lab → · Contrast checker → · Palette generator →