#304E8A#304E8A

#304E8A is a dark, moderate blue. Relative luminance 0.079; OKLCH L 43.2% C 0.106 H 262.7°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#304E8A
RGB	rgb(48, 78, 138)
HSL	hsl(220, 48%, 36%)
HSV	hsv(220, 65%, 54%)
CMYK	cmyk(65.2%, 43.5%, 0%, 45.9%)
CIE-LAB	lab(33.80, 9.21, -36.80)
CIE-LCH	lch(33.80, 37.94, 284.04°)
OKLab	oklab(43.23% -0.0133 -0.1049)
OKLCH	oklch(43.23% 0.106 262.7)
XYZ	xyz(8.5292, 7.9114, 25.1174)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304E8A #8A6C30

analogous

#307B8A #304E8A #3F308A

triadic

#304E8A #8A304E #4E8A30

tetradic

#304E8A #8A307B #8A6C30 #308A3F

square

#304E8A #8A307B #8A6C30 #308A3F

split-complementary

#304E8A #8A3F30 #7B8A30

monochromatic

#101B2F #20345D #304E8A #4068B7 #698ACB

Accessibility & contrast

On white

8.13

#304E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#304E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304E8A

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304E8A	#FFFFFF	#000000	##FFFFFF
##304E8A	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33548C

Deuteranopia (green-blind)

#254C89

Tritanopia (blue-blind)

#005C65

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #304e8a;
/* rgb */ color: rgb(48, 78, 138);
/* oklch */ color: oklch(43.2% 0.106 262.7);

Tailwind

colors: {
  custom: {
    50: '#727fac',
    500: '#304e8a',
    950: '#000000',
  },
}

SCSS

$custom: #304e8a;
$custom-light: #727fac;
$custom-dark: #000000;

JSON

{
  "hex": "#304e8a",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 138
  },
  "hsl": {
    "h": 220,
    "s": 48.387,
    "l": 36.471
  },
  "oklch": {
    "l": 0.4323,
    "c": 0.10575,
    "h": 262.7
  },
  "luminance": 0.07912
}

Semantic roles & 50–950 ramp

primary

#304E8A

secondary

#B29864

accent

#AB50D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #304E8A

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

Preview Lab → · Contrast checker → · Palette generator →