#304F83#304F83

#304F83 is a dark, moderate blue. Relative luminance 0.079; OKLCH L 43.0% C 0.094 H 260.2°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#304F83
RGB	rgb(48, 79, 131)
HSL	hsl(218, 46%, 35%)
HSV	hsv(218, 63%, 51%)
CMYK	cmyk(63.4%, 39.7%, 0%, 48.6%)
CIE-LAB	lab(33.69, 5.96, -32.68)
CIE-LCH	lch(33.69, 33.22, 280.34°)
OKLab	oklab(43.01% -0.016 -0.0928)
OKLCH	oklch(43.01% 0.094 260.2)
XYZ	xyz(8.1102, 7.8583, 22.5577)
Luminance	0.0786 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304F83 #836430

analogous

#307983 #304F83 #3A3083

triadic

#304F83 #83304F #4F8330

tetradic

#304F83 #833079 #836430 #30833A

square

#304F83 #833079 #836430 #30833A

split-complementary

#304F83 #833A30 #798330

monochromatic

#0F1929 #203456 #304F83 #406AB0 #668AC7

Accessibility & contrast

On white

8.17

#304F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#304F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304F83

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304F83	#FFFFFF	#000000	##FFFFFF
##304F83	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#395385

Deuteranopia (green-blind)

#2D4C82

Tritanopia (blue-blind)

#005B62

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #304f83;
/* rgb */ color: rgb(48, 79, 131);
/* oklch */ color: oklch(43.0% 0.094 260.2);

Tailwind

colors: {
  custom: {
    50: '#7080a7',
    500: '#304f83',
    950: '#000000',
  },
}

SCSS

$custom: #304f83;
$custom-light: #7080a7;
$custom-dark: #000000;

JSON

{
  "hex": "#304f83",
  "rgb": {
    "r": 48,
    "g": 79,
    "b": 131
  },
  "hsl": {
    "h": 217.59,
    "s": 46.369,
    "l": 35.098
  },
  "oklch": {
    "l": 0.43009,
    "c": 0.09417,
    "h": 260.2
  },
  "luminance": 0.07859
}

Semantic roles & 50–950 ramp

primary

#304F83

secondary

#AE9161

accent

#A552D6

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A0F

muted

#7B7C7F

Preview Lab

Preview with #304F83

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

Preview Lab → · Contrast checker → · Palette generator →