#303BA7#303BA7

#303BA7 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.6% C 0.171 H 272.0°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#303BA7
RGB	rgb(48, 59, 167)
HSL	hsl(234, 55%, 42%)
HSV	hsv(234, 71%, 65%)
CMYK	cmyk(71.3%, 64.7%, 0%, 34.5%)
CIE-LAB	lab(30.75, 32.60, -59.34)
CIE-LCH	lch(30.75, 67.71, 298.78°)
OKLab	oklab(41.61% 0.006 -0.1714)
OKLCH	oklch(41.61% 0.171 272)
XYZ	xyz(9.7556, 6.5454, 37.3010)
Luminance	0.0655 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303BA7 #A79C30

analogous

#3076A7 #303BA7 #6130A7

triadic

#303BA7 #A7303B #3BA730

tetradic

#303BA7 #A73076 #A79C30 #30A761

square

#303BA7 #A73076 #A79C30 #30A761

split-complementary

#303BA7 #A76130 #76A730

monochromatic

#151948 #222A77 #303BA7 #4955CB #7982D8

Accessibility & contrast

On white

9.09

#303BA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#303BA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BA7

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BA7	#FFFFFF	#000000	##FFFFFF
##303BA7	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAA

Deuteranopia (green-blind)

#0043A5

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303ba7;
/* rgb */ color: rgb(48, 59, 167);
/* oklch */ color: oklch(41.6% 0.171 272.0);

Tailwind

colors: {
  custom: {
    50: '#7971c2',
    500: '#303ba7',
    950: '#000000',
  },
}

SCSS

$custom: #303ba7;
$custom-light: #7971c2;
$custom-dark: #000000;

JSON

{
  "hex": "#303ba7",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 167
  },
  "hsl": {
    "h": 234.454,
    "s": 55.349,
    "l": 42.157
  },
  "oklch": {
    "l": 0.4161,
    "c": 0.17149,
    "h": 272
  },
  "luminance": 0.06546
}

Semantic roles & 50–950 ramp

primary

#303BA7

secondary

#C1B972

accent

#D149DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303BA7

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

Preview Lab → · Contrast checker → · Palette generator →