#304571#304571

#304571 is a dark, moderate blue. Relative luminance 0.061; OKLCH L 39.5% C 0.079 H 263.8°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#304571
RGB	rgb(48, 69, 113)
HSL	hsl(221, 40%, 32%)
HSV	hsv(221, 58%, 44%)
CMYK	cmyk(57.5%, 38.9%, 0%, 55.7%)
CIE-LAB	lab(29.60, 6.07, -27.91)
CIE-LCH	lch(29.60, 28.56, 282.26°)
OKLab	oklab(39.51% -0.0086 -0.079)
OKLCH	oklch(39.51% 0.079 263.8)
XYZ	xyz(6.3267, 6.0764, 16.4591)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304571 #715C30

analogous

#306671 #304571 #3C3071

triadic

#304571 #713045 #457130

tetradic

#304571 #713066 #715C30 #30713C

square

#304571 #713066 #715C30 #30713C

split-complementary

#304571 #713C30 #667130

monochromatic

#0C111B #1E2B46 #304571 #425F9C #607EBB

Accessibility & contrast

On white

9.48

#304571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#304571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304571

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304571	#FFFFFF	#000000	##FFFFFF
##304571	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334973

Deuteranopia (green-blind)

#2B4370

Tritanopia (blue-blind)

#0A4F55

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #304571;
/* rgb */ color: rgb(48, 69, 113);
/* oklch */ color: oklch(39.5% 0.079 263.8);

Tailwind

colors: {
  custom: {
    50: '#6e789a',
    500: '#304571',
    950: '#000000',
  },
}

SCSS

$custom: #304571;
$custom-light: #6e789a;
$custom-dark: #000000;

JSON

{
  "hex": "#304571",
  "rgb": {
    "r": 48,
    "g": 69,
    "b": 113
  },
  "hsl": {
    "h": 220.615,
    "s": 40.373,
    "l": 31.569
  },
  "oklch": {
    "l": 0.39511,
    "c": 0.07943,
    "h": 263.8
  },
  "luminance": 0.06077
}

Semantic roles & 50–950 ramp

primary

#304571

secondary

#A28B5B

accent

#A958D0

background

#F6F7F9

surface

#ECEDF2

border

#C7C8CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #304571

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

Preview Lab → · Contrast checker → · Palette generator →