#303BA6#303BA6

#303BA6 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.170 H 272.0°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#303BA6
RGB	rgb(48, 59, 166)
HSL	hsl(234, 55%, 42%)
HSV	hsv(234, 71%, 65%)
CMYK	cmyk(71.1%, 64.5%, 0%, 34.9%)
CIE-LAB	lab(30.66, 32.24, -58.88)
CIE-LCH	lch(30.66, 67.13, 298.70°)
OKLab	oklab(41.52% 0.0061 -0.17)
OKLCH	oklch(41.52% 0.17 272)
XYZ	xyz(9.6635, 6.5085, 36.8160)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303BA6 #A69B30

analogous

#3076A6 #303BA6 #6030A6

triadic

#303BA6 #A6303B #3BA630

tetradic

#303BA6 #A63076 #A69B30 #30A660

square

#303BA6 #A63076 #A69B30 #30A660

split-complementary

#303BA6 #A66030 #76A630

monochromatic

#151947 #222A77 #303BA6 #4955CA #7881D8

Accessibility & contrast

On white

9.12

#303BA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#303BA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BA6

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BA6	#FFFFFF	#000000	##FFFFFF
##303BA6	1.00	9.12	2.30	9.12
#FFFFFF	9.12	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA9

Deuteranopia (green-blind)

#0043A4

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303ba6;
/* rgb */ color: rgb(48, 59, 166);
/* oklch */ color: oklch(41.5% 0.170 272.0);

Tailwind

colors: {
  custom: {
    50: '#7971c1',
    500: '#303ba6',
    950: '#000000',
  },
}

SCSS

$custom: #303ba6;
$custom-light: #7971c1;
$custom-dark: #000000;

JSON

{
  "hex": "#303ba6",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 166
  },
  "hsl": {
    "h": 234.407,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41519,
    "c": 0.17016,
    "h": 272
  },
  "luminance": 0.06509
}

Semantic roles & 50–950 ramp

primary

#303BA6

secondary

#C0B971

accent

#D149DE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303BA6

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

Preview Lab → · Contrast checker → · Palette generator →