#304166#304166

#304166 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 37.9% C 0.067 H 264.6°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#304166
RGB	rgb(48, 65, 102)
HSL	hsl(221, 36%, 29%)
HSV	hsv(221, 53%, 40%)
CMYK	cmyk(52.9%, 36.3%, 0%, 60%)
CIE-LAB	lab(27.76, 4.86, -23.82)
CIE-LCH	lch(27.76, 24.31, 281.53°)
OKLab	oklab(37.88% -0.0063 -0.0671)
OKLCH	oklch(37.88% 0.067 264.6)
XYZ	xyz(5.5067, 5.3679, 13.3137)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304166 #665530

analogous

#305C66 #304166 #3A3066

triadic

#304166 #663041 #416630

tetradic

#304166 #66305C #665530 #30663A

square

#304166 #66305C #665530 #30663A

split-complementary

#304166 #663A30 #5C6630

monochromatic

#0A0D15 #1C263C #304166 #445C90 #5D78B3

Accessibility & contrast

On white

10.13

#304166 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#304166 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304166

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304166	#FFFFFF	#000000	##FFFFFF
##304166	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334468

Deuteranopia (green-blind)

#2D3F65

Tritanopia (blue-blind)

#18494E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #304166;
/* rgb */ color: rgb(48, 65, 102);
/* oklch */ color: oklch(37.9% 0.067 264.6);

Tailwind

colors: {
  custom: {
    50: '#6c7592',
    500: '#304166',
    950: '#000000',
  },
}

SCSS

$custom: #304166;
$custom-light: #6c7592;
$custom-dark: #000000;

JSON

{
  "hex": "#304166",
  "rgb": {
    "r": 48,
    "g": 65,
    "b": 102
  },
  "hsl": {
    "h": 221.111,
    "s": 36,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37881,
    "c": 0.06739,
    "h": 264.6
  },
  "luminance": 0.05368
}

Semantic roles & 50–950 ramp

primary

#304166

secondary

#97845A

accent

#A95CCC

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#07080D

muted

#7A7B7D

Preview Lab

Preview with #304166

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

Preview Lab → · Contrast checker → · Palette generator →