#304D91#304D91

#304D91 is a dark, moderate blue. Relative luminance 0.080; OKLCH L 43.5% C 0.117 H 264.6°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#304D91
RGB	rgb(48, 77, 145)
HSL	hsl(222, 50%, 38%)
HSV	hsv(222, 67%, 57%)
CMYK	cmyk(66.9%, 46.9%, 0%, 43.1%)
CIE-LAB	lab(33.94, 12.48, -40.85)
CIE-LCH	lch(33.94, 42.72, 286.99°)
OKLab	oklab(43.48% -0.011 -0.1168)
OKLCH	oklch(43.48% 0.117 264.6)
XYZ	xyz(8.9819, 7.9796, 27.8495)
Luminance	0.0798 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304D91 #917430

analogous

#307D91 #304D91 #443091

triadic

#304D91 #91304D #4D9130

tetradic

#304D91 #91307D #917430 #309144

square

#304D91 #91307D #917430 #309144

split-complementary

#304D91 #914430 #7D9130

monochromatic

#121C35 #213563 #304D91 #3F65BF #6D8ACF

Accessibility & contrast

On white

8.09

#304D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#304D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304D91

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304D91	#FFFFFF	#000000	##FFFFFF
##304D91	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B5594

Deuteranopia (green-blind)

#1A4C90

Tritanopia (blue-blind)

#005D68

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #304d91;
/* rgb */ color: rgb(48, 77, 145);
/* oklch */ color: oklch(43.5% 0.117 264.6);

Tailwind

colors: {
  custom: {
    50: '#737eb2',
    500: '#304d91',
    950: '#000000',
  },
}

SCSS

$custom: #304d91;
$custom-light: #737eb2;
$custom-dark: #000000;

JSON

{
  "hex": "#304d91",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 145
  },
  "hsl": {
    "h": 222.062,
    "s": 50.259,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43481,
    "c": 0.11732,
    "h": 264.6
  },
  "luminance": 0.0798
}

Semantic roles & 50–950 ramp

primary

#304D91

secondary

#B69E67

accent

#B04EDA

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #304D91

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

Preview Lab → · Contrast checker → · Palette generator →