#304C8A#304C8A

#304C8A is a dark, moderate blue. Relative luminance 0.076; OKLCH L 42.8% C 0.108 H 264.1°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#304C8A
RGB	rgb(48, 76, 138)
HSL	hsl(221, 48%, 36%)
HSV	hsv(221, 65%, 54%)
CMYK	cmyk(65.2%, 44.9%, 0%, 45.9%)
CIE-LAB	lab(33.20, 10.54, -37.75)
CIE-LCH	lch(33.20, 39.19, 285.60°)
OKLab	oklab(42.77% -0.0112 -0.1077)
OKLCH	oklch(42.77% 0.108 264.1)
XYZ	xyz(8.3892, 7.6315, 25.0707)
Luminance	0.0763 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304C8A #8A6E30

analogous

#30798A #304C8A #41308A

triadic

#304C8A #8A304C #4C8A30

tetradic

#304C8A #8A3079 #8A6E30 #308A41

square

#304C8A #8A3079 #8A6E30 #308A41

split-complementary

#304C8A #8A4130 #798A30

monochromatic

#101A2F #20335D #304C8A #4065B7 #6988CB

Accessibility & contrast

On white

8.31

#304C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#304C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304C8A

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304C8A	#FFFFFF	#000000	##FFFFFF
##304C8A	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F528C

Deuteranopia (green-blind)

#214A89

Tritanopia (blue-blind)

#005A64

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #304c8a;
/* rgb */ color: rgb(48, 76, 138);
/* oklch */ color: oklch(42.8% 0.108 264.1);

Tailwind

colors: {
  custom: {
    50: '#727dac',
    500: '#304c8a',
    950: '#000000',
  },
}

SCSS

$custom: #304c8a;
$custom-light: #727dac;
$custom-dark: #000000;

JSON

{
  "hex": "#304c8a",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 138
  },
  "hsl": {
    "h": 221.333,
    "s": 48.387,
    "l": 36.471
  },
  "oklch": {
    "l": 0.42772,
    "c": 0.10829,
    "h": 264.1
  },
  "luminance": 0.07632
}

Semantic roles & 50–950 ramp

primary

#304C8A

secondary

#B29A64

accent

#AE50D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #304C8A

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

Preview Lab → · Contrast checker → · Palette generator →