#263F63#263F63

#263F63 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.6% C 0.070 H 257.5°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#263F63
RGB	rgb(38, 63, 99)
HSL	hsl(215, 45%, 27%)
HSV	hsv(215, 62%, 39%)
CMYK	cmyk(61.6%, 36.4%, 0%, 61.2%)
CIE-LAB	lab(26.35, 2.62, -24.15)
CIE-LCH	lch(26.35, 24.29, 276.18°)
OKLab	oklab(36.57% -0.0151 -0.0682)
OKLCH	oklch(36.57% 0.07 257.5)
XYZ	xyz(4.8282, 4.8675, 12.4871)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263F63 #634A26

analogous

#265E63 #263F63 #2C2663

triadic

#263F63 #63263F #3F6326

tetradic

#263F63 #63265E #634A26 #26632C

square

#263F63 #63265E #634A26 #26632C

split-complementary

#263F63 #632C26 #5E6326

monochromatic

#080E16 #152337 #263F63 #375B8F #4A78B9

Accessibility & contrast

On white

10.64

#263F63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#263F63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263F63

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263F63	#FFFFFF	#000000	##FFFFFF
##263F63	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304265

Deuteranopia (green-blind)

#283C62

Tritanopia (blue-blind)

#00474C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #263f63;
/* rgb */ color: rgb(38, 63, 99);
/* oklch */ color: oklch(36.6% 0.070 257.5);

Tailwind

colors: {
  custom: {
    50: '#66738f',
    500: '#263f63',
    950: '#000000',
  },
}

SCSS

$custom: #263f63;
$custom-light: #66738f;
$custom-dark: #000000;

JSON

{
  "hex": "#263f63",
  "rgb": {
    "r": 38,
    "g": 63,
    "b": 99
  },
  "hsl": {
    "h": 215.41,
    "s": 44.526,
    "l": 26.863
  },
  "oklch": {
    "l": 0.36572,
    "c": 0.06989,
    "h": 257.5
  },
  "luminance": 0.04868
}

Semantic roles & 50–950 ramp

primary

#263F63

secondary

#96794F

accent

#A054D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06080C

muted

#7A7B7D

Preview Lab

Preview with #263F63

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

Preview Lab → · Contrast checker → · Palette generator →