#304A8D#304A8D

#304A8D is a dark, moderate blue. Relative luminance 0.074; OKLCH L 42.5% C 0.115 H 265.8°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#304A8D
RGB	rgb(48, 74, 141)
HSL	hsl(223, 49%, 37%)
HSV	hsv(223, 66%, 55%)
CMYK	cmyk(66%, 47.5%, 0%, 44.7%)
CIE-LAB	lab(32.81, 12.99, -40.23)
CIE-LCH	lch(32.81, 42.27, 287.90°)
OKLab	oklab(42.53% -0.0085 -0.115)
OKLCH	oklch(42.53% 0.115 265.8)
XYZ	xyz(8.4738, 7.4482, 26.1852)
Luminance	0.0745 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304A8D #8D7330

analogous

#30798D #304A8D #45308D

triadic

#304A8D #8D304A #4A8D30

tetradic

#304A8D #8D3079 #8D7330 #308D45

square

#304A8D #8D3079 #8D7330 #308D45

split-complementary

#304A8D #8D4530 #798D30

monochromatic

#111A32 #20325F #304A8D #4062BB #6B86CD

Accessibility & contrast

On white

8.43

#304A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#304A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304A8D

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304A8D	#FFFFFF	#000000	##FFFFFF
##304A8D	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#295290

Deuteranopia (green-blind)

#18498C

Tritanopia (blue-blind)

#005964

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #304a8d;
/* rgb */ color: rgb(48, 74, 141);
/* oklch */ color: oklch(42.5% 0.115 265.8);

Tailwind

colors: {
  custom: {
    50: '#727caf',
    500: '#304a8d',
    950: '#000000',
  },
}

SCSS

$custom: #304a8d;
$custom-light: #727caf;
$custom-dark: #000000;

JSON

{
  "hex": "#304a8d",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 141
  },
  "hsl": {
    "h": 223.226,
    "s": 49.206,
    "l": 37.059
  },
  "oklch": {
    "l": 0.42529,
    "c": 0.11533,
    "h": 265.8
  },
  "luminance": 0.07449
}

Semantic roles & 50–950 ramp

primary

#304A8D

secondary

#B49E65

accent

#B24FD9

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #304A8D

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

Preview Lab → · Contrast checker → · Palette generator →