#304B80#304B80

#304B80 is a dark, moderate blue. Relative luminance 0.072; OKLCH L 41.9% C 0.095 H 262.6°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#304B80
RGB	rgb(48, 75, 128)
HSL	hsl(220, 45%, 35%)
HSV	hsv(220, 63%, 50%)
CMYK	cmyk(62.5%, 41.4%, 0%, 49.8%)
CIE-LAB	lab(32.30, 7.50, -33.02)
CIE-LCH	lch(32.30, 33.87, 282.80°)
OKLab	oklab(41.88% -0.0122 -0.0939)
OKLCH	oklch(41.88% 0.095 262.6)
XYZ	xyz(7.6299, 7.2184, 21.4091)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304B80 #806530

analogous

#307380 #304B80 #3D3080

triadic

#304B80 #80304B #4B8030

tetradic

#304B80 #803073 #806530 #30803D

square

#304B80 #803073 #806530 #30803D

split-complementary

#304B80 #803D30 #738030

monochromatic

#0F1727 #1F3153 #304B80 #4165AD #6586C5

Accessibility & contrast

On white

8.59

#304B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#304B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304B80

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304B80	#FFFFFF	#000000	##FFFFFF
##304B80	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345082

Deuteranopia (green-blind)

#29497F

Tritanopia (blue-blind)

#00575F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #304b80;
/* rgb */ color: rgb(48, 75, 128);
/* oklch */ color: oklch(41.9% 0.095 262.6);

Tailwind

colors: {
  custom: {
    50: '#707ca5',
    500: '#304b80',
    950: '#000000',
  },
}

SCSS

$custom: #304b80;
$custom-light: #707ca5;
$custom-dark: #000000;

JSON

{
  "hex": "#304b80",
  "rgb": {
    "r": 48,
    "g": 75,
    "b": 128
  },
  "hsl": {
    "h": 219.75,
    "s": 45.455,
    "l": 34.51
  },
  "oklch": {
    "l": 0.41878,
    "c": 0.09464,
    "h": 262.6
  },
  "luminance": 0.07219
}

Semantic roles & 50–950 ramp

primary

#304B80

secondary

#AC925F

accent

#A953D5

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#08090F

muted

#7B7B7F

Preview Lab

Preview with #304B80

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

Preview Lab → · Contrast checker → · Palette generator →