#304C8F#304C8F

#304C8F is a dark, moderate blue. Relative luminance 0.078; OKLCH L 43.1% C 0.116 H 264.9°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#304C8F
RGB	rgb(48, 76, 143)
HSL	hsl(222, 50%, 37%)
HSV	hsv(222, 66%, 56%)
CMYK	cmyk(66.4%, 46.9%, 0%, 43.9%)
CIE-LAB	lab(33.52, 12.40, -40.30)
CIE-LCH	lch(33.52, 42.17, 287.10°)
OKLab	oklab(43.12% -0.0103 -0.1152)
OKLCH	oklch(43.12% 0.116 264.9)
XYZ	xyz(8.7596, 7.7796, 27.0213)
Luminance	0.0778 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304C8F #8F7330

analogous

#307B8F #304C8F #44308F

triadic

#304C8F #8F304C #4C8F30

tetradic

#304C8F #8F307B #8F7330 #308F44

square

#304C8F #8F307B #8F7330 #308F44

split-complementary

#304C8F #8F4430 #7B8F30

monochromatic

#111B33 #213461 #304C8F #3F64BD #6C89CE

Accessibility & contrast

On white

8.22

#304C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#304C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304C8F

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304C8F	#FFFFFF	#000000	##FFFFFF
##304C8F	1.00	8.22	2.56	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B5392

Deuteranopia (green-blind)

#1A4B8E

Tritanopia (blue-blind)

#005B66

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #304c8f;
/* rgb */ color: rgb(48, 76, 143);
/* oklch */ color: oklch(43.1% 0.116 264.9);

Tailwind

colors: {
  custom: {
    50: '#737db0',
    500: '#304c8f',
    950: '#000000',
  },
}

SCSS

$custom: #304c8f;
$custom-light: #737db0;
$custom-dark: #000000;

JSON

{
  "hex": "#304c8f",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 143
  },
  "hsl": {
    "h": 222.316,
    "s": 49.738,
    "l": 37.451
  },
  "oklch": {
    "l": 0.43117,
    "c": 0.11568,
    "h": 264.9
  },
  "luminance": 0.0778
}

Semantic roles & 50–950 ramp

primary

#304C8F

secondary

#B59E66

accent

#B04FD9

background

#F7F7FA

surface

#EDEEF5

border

#C8C9CF

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #304C8F

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

Preview Lab → · Contrast checker → · Palette generator →