#263A8F#263A8F

#263A8F is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.143 H 268.7°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#263A8F
RGB	rgb(38, 58, 143)
HSL	hsl(229, 58%, 35%)
HSV	hsv(229, 73%, 56%)
CMYK	cmyk(73.4%, 59.4%, 0%, 43.9%)
CIE-LAB	lab(27.90, 23.00, -49.41)
CIE-LCH	lch(27.90, 54.50, 294.97°)
OKLab	oklab(38.72% -0.0032 -0.1425)
OKLCH	oklch(38.72% 0.143 268.7)
XYZ	xyz(7.2686, 5.4206, 26.6445)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263A8F #8F7B26

analogous

#266F8F #263A8F #46268F

triadic

#263A8F #8F263A #3A8F26

tetradic

#263A8F #8F266F #8F7B26 #268F46

square

#263A8F #8F266F #8F7B26 #268F46

split-complementary

#263A8F #8F4626 #6F8F26

monochromatic

#0C132E #19265F #263A8F #334EBF #5C73D4

Accessibility & contrast

On white

10.08

#263A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#263A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263A8F

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263A8F	#FFFFFF	#000000	##FFFFFF
##263A8F	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003D8D

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #263a8f;
/* rgb */ color: rgb(38, 58, 143);
/* oklch */ color: oklch(38.7% 0.143 268.7);

Tailwind

colors: {
  custom: {
    50: '#706fb0',
    500: '#263a8f',
    950: '#000000',
  },
}

SCSS

$custom: #263a8f;
$custom-light: #706fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#263a8f",
  "rgb": {
    "r": 38,
    "g": 58,
    "b": 143
  },
  "hsl": {
    "h": 228.571,
    "s": 58.011,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38722,
    "c": 0.14252,
    "h": 268.7
  },
  "luminance": 0.05421
}

Semantic roles & 50–950 ramp

primary

#263A8F

secondary

#B9A658

accent

#C447E1

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #263A8F

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

Preview Lab → · Contrast checker → · Palette generator →