#304591#304591

#304591 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.7% C 0.128 H 268.7°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#304591
RGB	rgb(48, 69, 145)
HSL	hsl(227, 50%, 38%)
HSV	hsv(227, 67%, 57%)
CMYK	cmyk(66.9%, 52.4%, 0%, 43.1%)
CIE-LAB	lab(31.64, 17.85, -44.54)
CIE-LCH	lch(31.64, 47.99, 291.84°)
OKLab	oklab(41.73% -0.0029 -0.1278)
OKLCH	oklch(41.73% 0.128 268.7)
XYZ	xyz(8.4561, 6.9282, 27.6742)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304591 #917C30

analogous

#307691 #304591 #4B3091

triadic

#304591 #913045 #459130

tetradic

#304591 #913076 #917C30 #30914B

square

#304591 #913076 #917C30 #30914B

split-complementary

#304591 #914B30 #769130

monochromatic

#121935 #212F63 #304591 #3F5BBF #6D82CF

Accessibility & contrast

On white

8.80

#304591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#304591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304591

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304591	#FFFFFF	#000000	##FFFFFF
##304591	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184F94

Deuteranopia (green-blind)

#00468F

Tritanopia (blue-blind)

#005764

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #304591;
/* rgb */ color: rgb(48, 69, 145);
/* oklch */ color: oklch(41.7% 0.128 268.7);

Tailwind

colors: {
  custom: {
    50: '#7378b2',
    500: '#304591',
    950: '#000000',
  },
}

SCSS

$custom: #304591;
$custom-light: #7378b2;
$custom-dark: #000000;

JSON

{
  "hex": "#304591",
  "rgb": {
    "r": 48,
    "g": 69,
    "b": 145
  },
  "hsl": {
    "h": 227.01,
    "s": 50.259,
    "l": 37.843
  },
  "oklch": {
    "l": 0.4173,
    "c": 0.12783,
    "h": 268.7
  },
  "luminance": 0.06929
}

Semantic roles & 50–950 ramp

primary

#304591

secondary

#B6A567

accent

#BC4EDA

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #304591

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

Preview Lab → · Contrast checker → · Palette generator →