#304CA6#304CA6

#304CA6 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.8% C 0.149 H 267.1°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#304CA6
RGB	rgb(48, 76, 166)
HSL	hsl(226, 55%, 42%)
HSV	hsv(226, 71%, 65%)
CMYK	cmyk(71.1%, 54.2%, 0%, 34.9%)
CIE-LAB	lab(35.10, 21.04, -51.65)
CIE-LCH	lch(35.10, 55.77, 292.16°)
OKLab	oklab(44.83% -0.0075 -0.1486)
OKLCH	oklch(44.83% 0.149 267.1)
XYZ	xyz(10.6839, 8.5494, 37.1561)
Luminance	0.0855 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304CA6 #A68A30

analogous

#3087A6 #304CA6 #4F30A6

triadic

#304CA6 #A6304C #4CA630

tetradic

#304CA6 #A63087 #A68A30 #30A64F

square

#304CA6 #A63087 #A68A30 #30A64F

split-complementary

#304CA6 #A64F30 #87A630

monochromatic

#152147 #223677 #304CA6 #4968CA #788FD8

Accessibility & contrast

On white

7.75

#304CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#304CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304CA6

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304CA6	#FFFFFF	#000000	##FFFFFF
##304CA6	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0858A9

Deuteranopia (green-blind)

#004DA4

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304ca6;
/* rgb */ color: rgb(48, 76, 166);
/* oklch */ color: oklch(44.8% 0.149 267.1);

Tailwind

colors: {
  custom: {
    50: '#787dc1',
    500: '#304ca6',
    950: '#000000',
  },
}

SCSS

$custom: #304ca6;
$custom-light: #787dc1;
$custom-dark: #000000;

JSON

{
  "hex": "#304ca6",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 166
  },
  "hsl": {
    "h": 225.763,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.44826,
    "c": 0.1488,
    "h": 267.1
  },
  "luminance": 0.0855
}

Semantic roles & 50–950 ramp

primary

#304CA6

secondary

#C0AE71

accent

#BB49DE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304CA6

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

Preview Lab → · Contrast checker → · Palette generator →