#304A8F#304A8F

#304A8F is a dark, moderate blue. Relative luminance 0.075; OKLCH L 42.7% C 0.118 H 266.0°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#304A8F
RGB	rgb(48, 74, 143)
HSL	hsl(224, 50%, 37%)
HSV	hsv(224, 66%, 56%)
CMYK	cmyk(66.4%, 48.3%, 0%, 43.9%)
CIE-LAB	lab(32.94, 13.74, -41.24)
CIE-LCH	lch(32.94, 43.47, 288.43°)
OKLab	oklab(42.67% -0.0082 -0.118)
OKLCH	oklch(42.67% 0.118 266)
XYZ	xyz(8.6239, 7.5083, 26.9760)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304A8F #8F7530

analogous

#30798F #304A8F #46308F

triadic

#304A8F #8F304A #4A8F30

tetradic

#304A8F #8F3079 #8F7530 #308F46

square

#304A8F #8F3079 #8F7530 #308F46

split-complementary

#304A8F #8F4630 #798F30

monochromatic

#111B33 #213261 #304A8F #3F62BD #6C87CE

Accessibility & contrast

On white

8.39

#304A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#304A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304A8F

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304A8F	#FFFFFF	#000000	##FFFFFF
##304A8F	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#275292

Deuteranopia (green-blind)

#14498E

Tritanopia (blue-blind)

#005A65

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #304a8f;
/* rgb */ color: rgb(48, 74, 143);
/* oklch */ color: oklch(42.7% 0.118 266.0);

Tailwind

colors: {
  custom: {
    50: '#737cb0',
    500: '#304a8f',
    950: '#000000',
  },
}

SCSS

$custom: #304a8f;
$custom-light: #737cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#304a8f",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 143
  },
  "hsl": {
    "h": 223.579,
    "s": 49.738,
    "l": 37.451
  },
  "oklch": {
    "l": 0.42671,
    "c": 0.11828,
    "h": 266
  },
  "luminance": 0.07509
}

Semantic roles & 50–950 ramp

primary

#304A8F

secondary

#B59F66

accent

#B34FD9

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #304A8F

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

Preview Lab → · Contrast checker → · Palette generator →