#304AA6#304AA6

#304AA6 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.4% C 0.151 H 267.8°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#304AA6
RGB	rgb(48, 74, 166)
HSL	hsl(227, 55%, 42%)
HSV	hsv(227, 71%, 65%)
CMYK	cmyk(71.1%, 55.4%, 0%, 34.9%)
CIE-LAB	lab(34.56, 22.37, -52.54)
CIE-LCH	lch(34.56, 57.10, 293.06°)
OKLab	oklab(44.41% -0.0058 -0.1512)
OKLCH	oklch(44.41% 0.151 267.8)
XYZ	xyz(10.5483, 8.2780, 37.1109)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AA6 #A68C30

analogous

#3085A6 #304AA6 #5130A6

triadic

#304AA6 #A6304A #4AA630

tetradic

#304AA6 #A63085 #A68C30 #30A651

square

#304AA6 #A63085 #A68C30 #30A651

split-complementary

#304AA6 #A65130 #85A630

monochromatic

#152047 #223577 #304AA6 #4965CA #788DD8

Accessibility & contrast

On white

7.91

#304AA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#304AA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AA6

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AA6	#FFFFFF	#000000	##FFFFFF
##304AA6	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057A9

Deuteranopia (green-blind)

#004CA4

Tritanopia (blue-blind)

#006070

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #304aa6;
/* rgb */ color: rgb(48, 74, 166);
/* oklch */ color: oklch(44.4% 0.151 267.8);

Tailwind

colors: {
  custom: {
    50: '#787cc1',
    500: '#304aa6',
    950: '#000000',
  },
}

SCSS

$custom: #304aa6;
$custom-light: #787cc1;
$custom-dark: #000000;

JSON

{
  "hex": "#304aa6",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 166
  },
  "hsl": {
    "h": 226.78,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.44414,
    "c": 0.15135,
    "h": 267.8
  },
  "luminance": 0.08279
}

Semantic roles & 50–950 ramp

primary

#304AA6

secondary

#C0AF71

accent

#BE49DE

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304AA6

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

Preview Lab → · Contrast checker → · Palette generator →