#304D8D#304D8D

#304D8D is a dark, moderate blue. Relative luminance 0.079; OKLCH L 43.2% C 0.111 H 264.0°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#304D8D
RGB	rgb(48, 77, 141)
HSL	hsl(221, 49%, 37%)
HSV	hsv(221, 66%, 55%)
CMYK	cmyk(66%, 45.4%, 0%, 44.7%)
CIE-LAB	lab(33.69, 10.99, -38.82)
CIE-LCH	lch(33.69, 40.34, 285.81°)
OKLab	oklab(43.2% -0.0117 -0.1108)
OKLCH	oklch(43.2% 0.111 264)
XYZ	xyz(8.6788, 7.8584, 26.2536)
Luminance	0.0786 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304D8D #8D7030

analogous

#307C8D #304D8D #42308D

triadic

#304D8D #8D304D #4D8D30

tetradic

#304D8D #8D307C #8D7030 #308D42

square

#304D8D #8D307C #8D7030 #308D42

split-complementary

#304D8D #8D4230 #7C8D30

monochromatic

#111B32 #20345F #304D8D #4066BB #6B89CD

Accessibility & contrast

On white

8.17

#304D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#304D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304D8D

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304D8D	#FFFFFF	#000000	##FFFFFF
##304D8D	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F548F

Deuteranopia (green-blind)

#1F4B8C

Tritanopia (blue-blind)

#005C66

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #304d8d;
/* rgb */ color: rgb(48, 77, 141);
/* oklch */ color: oklch(43.2% 0.111 264.0);

Tailwind

colors: {
  custom: {
    50: '#727eaf',
    500: '#304d8d',
    950: '#000000',
  },
}

SCSS

$custom: #304d8d;
$custom-light: #727eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#304d8d",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 141
  },
  "hsl": {
    "h": 221.29,
    "s": 49.206,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43204,
    "c": 0.11144,
    "h": 264
  },
  "luminance": 0.07859
}

Semantic roles & 50–950 ramp

primary

#304D8D

secondary

#B49B65

accent

#AE4FD9

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #304D8D

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

Preview Lab → · Contrast checker → · Palette generator →