#263B8E#263B8E

#263B8E is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.140 H 268.3°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#263B8E
RGB	rgb(38, 59, 142)
HSL	hsl(228, 58%, 35%)
HSV	hsv(228, 73%, 56%)
CMYK	cmyk(73.2%, 58.5%, 0%, 44.3%)
CIE-LAB	lab(28.09, 21.93, -48.48)
CIE-LCH	lch(28.09, 53.21, 294.35°)
OKLab	oklab(38.84% -0.0041 -0.1397)
OKLCH	oklch(38.84% 0.14 268.3)
XYZ	xyz(7.2441, 5.4922, 26.2643)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#263B8E #8E7926

analogous

#266F8E #263B8E #45268E

triadic

#263B8E #8E263B #3B8E26

tetradic

#263B8E #8E266F #8E7926 #268E45

square

#263B8E #8E266F #8E7926 #268E45

split-complementary

#263B8E #8E4526 #6F8E26

monochromatic

#0C132D #19275E #263B8E #334FBE #5B73D3

Accessibility & contrast

On white

10.01

#263B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#263B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #263B8E

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##263B8E	#FFFFFF	#000000	##FFFFFF
##263B8E	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #263b8e;
/* rgb */ color: rgb(38, 59, 142);
/* oklch */ color: oklch(38.8% 0.140 268.3);

Tailwind

colors: {
  custom: {
    50: '#6f70b0',
    500: '#263b8e',
    950: '#000000',
  },
}

SCSS

$custom: #263b8e;
$custom-light: #6f70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#263b8e",
  "rgb": {
    "r": 38,
    "g": 59,
    "b": 142
  },
  "hsl": {
    "h": 227.885,
    "s": 57.778,
    "l": 35.294
  },
  "oklch": {
    "l": 0.3884,
    "c": 0.13979,
    "h": 268.3
  },
  "luminance": 0.05493
}

Semantic roles & 50–950 ramp

primary

#263B8E

secondary

#B8A558

accent

#C247E1

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #263B8E

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

Preview Lab → · Contrast checker → · Palette generator →