#303AA6#303AA6

#303AA6 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.3% C 0.171 H 272.3°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#303AA6
RGB	rgb(48, 58, 166)
HSL	hsl(235, 55%, 42%)
HSV	hsv(235, 71%, 65%)
CMYK	cmyk(71.1%, 65.1%, 0%, 34.9%)
CIE-LAB	lab(30.42, 32.88, -59.28)
CIE-LCH	lch(30.42, 67.79, 299.02°)
OKLab	oklab(41.34% 0.0068 -0.1712)
OKLCH	oklch(41.34% 0.171 272.3)
XYZ	xyz(9.6126, 6.4067, 36.7990)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303AA6 #A69C30

analogous

#3075A6 #303AA6 #6130A6

triadic

#303AA6 #A6303A #3AA630

tetradic

#303AA6 #A63075 #A69C30 #30A661

square

#303AA6 #A63075 #A69C30 #30A661

split-complementary

#303AA6 #A66130 #75A630

monochromatic

#151947 #222977 #303AA6 #4954CA #7880D8

Accessibility & contrast

On white

9.20

#303AA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#303AA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AA6

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AA6	#FFFFFF	#000000	##FFFFFF
##303AA6	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA9

Deuteranopia (green-blind)

#0042A4

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303aa6;
/* rgb */ color: rgb(48, 58, 166);
/* oklch */ color: oklch(41.3% 0.171 272.3);

Tailwind

colors: {
  custom: {
    50: '#7970c1',
    500: '#303aa6',
    950: '#000000',
  },
}

SCSS

$custom: #303aa6;
$custom-light: #7970c1;
$custom-dark: #000000;

JSON

{
  "hex": "#303aa6",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 166
  },
  "hsl": {
    "h": 234.915,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.4134,
    "c": 0.17136,
    "h": 272.3
  },
  "luminance": 0.06408
}

Semantic roles & 50–950 ramp

primary

#303AA6

secondary

#C0BA71

accent

#D249DE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303AA6

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

Preview Lab → · Contrast checker → · Palette generator →