#304B8A#304B8A

#304B8A is a dark, moderate blue. Relative luminance 0.075; OKLCH L 42.5% C 0.110 H 264.7°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#304B8A
RGB	rgb(48, 75, 138)
HSL	hsl(222, 48%, 36%)
HSV	hsv(222, 65%, 54%)
CMYK	cmyk(65.2%, 45.7%, 0%, 45.9%)
CIE-LAB	lab(32.91, 11.20, -38.22)
CIE-LCH	lch(32.91, 39.83, 286.34°)
OKLab	oklab(42.55% -0.0101 -0.1091)
OKLCH	oklch(42.55% 0.11 264.7)
XYZ	xyz(8.3209, 7.4948, 25.0480)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304B8A #8A6F30

analogous

#30788A #304B8A #42308A

triadic

#304B8A #8A304B #4B8A30

tetradic

#304B8A #8A3078 #8A6F30 #308A42

square

#304B8A #8A3078 #8A6F30 #308A42

split-complementary

#304B8A #8A4230 #788A30

monochromatic

#101A2F #20325D #304B8A #4064B7 #6987CB

Accessibility & contrast

On white

8.40

#304B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#304B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304B8A

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304B8A	#FFFFFF	#000000	##FFFFFF
##304B8A	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D528C

Deuteranopia (green-blind)

#1F4A89

Tritanopia (blue-blind)

#005963

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #304b8a;
/* rgb */ color: rgb(48, 75, 138);
/* oklch */ color: oklch(42.5% 0.110 264.7);

Tailwind

colors: {
  custom: {
    50: '#727cac',
    500: '#304b8a',
    950: '#000000',
  },
}

SCSS

$custom: #304b8a;
$custom-light: #727cac;
$custom-dark: #000000;

JSON

{
  "hex": "#304b8a",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 138
  },
  "hsl": {
    "h": 222,
    "s": 48.387,
    "l": 36.471
  },
  "oklch": {
    "l": 0.42545,
    "c": 0.10958,
    "h": 264.7
  },
  "luminance": 0.07496
}

Semantic roles & 50–950 ramp

primary

#304B8A

secondary

#B29B64

accent

#AF50D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080910

muted

#7B7B7F

Preview Lab

Preview with #304B8A

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

Preview Lab → · Contrast checker → · Palette generator →