#304F8A#304F8A

#304F8A is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.5% C 0.104 H 262.1°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#304F8A
RGB	rgb(48, 79, 138)
HSL	hsl(219, 48%, 36%)
HSV	hsv(219, 65%, 54%)
CMYK	cmyk(65.2%, 42.8%, 0%, 45.9%)
CIE-LAB	lab(34.10, 8.54, -36.33)
CIE-LCH	lch(34.10, 37.32, 283.24°)
OKLab	oklab(43.46% -0.0144 -0.1035)
OKLCH	oklch(43.46% 0.104 262.1)
XYZ	xyz(8.6007, 8.0545, 25.1413)
Luminance	0.0805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304F8A #8A6B30

analogous

#307C8A #304F8A #3E308A

triadic

#304F8A #8A304F #4F8A30

tetradic

#304F8A #8A307C #8A6B30 #308A3E

square

#304F8A #8A307C #8A6B30 #308A3E

split-complementary

#304F8A #8A3E30 #7C8A30

monochromatic

#101B2F #20355D #304F8A #4069B7 #698BCB

Accessibility & contrast

On white

8.04

#304F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#304F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304F8A

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304F8A	#FFFFFF	#000000	##FFFFFF
##304F8A	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34558C

Deuteranopia (green-blind)

#274C89

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #304f8a;
/* rgb */ color: rgb(48, 79, 138);
/* oklch */ color: oklch(43.5% 0.104 262.1);

Tailwind

colors: {
  custom: {
    50: '#727fac',
    500: '#304f8a',
    950: '#000000',
  },
}

SCSS

$custom: #304f8a;
$custom-light: #727fac;
$custom-dark: #000000;

JSON

{
  "hex": "#304f8a",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 138
  },
  "hsl": {
    "h": 219.333,
    "s": 48.387,
    "l": 36.471
  },
  "oklch": {
    "l": 0.4346,
    "c": 0.10449,
    "h": 262.1
  },
  "luminance": 0.08055
}

Semantic roles & 50–950 ramp

primary

#304F8A

secondary

#B29764

accent

#A950D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #304F8A

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

Preview Lab → · Contrast checker → · Palette generator →