#303BA9#303BA9

#303BA9 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.174 H 271.9°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#303BA9
RGB	rgb(48, 59, 169)
HSL	hsl(235, 56%, 43%)
HSV	hsv(235, 72%, 66%)
CMYK	cmyk(71.6%, 65.1%, 0%, 33.7%)
CIE-LAB	lab(30.93, 33.32, -60.25)
CIE-LCH	lch(30.93, 68.85, 298.94°)
OKLab	oklab(41.79% 0.0059 -0.1741)
OKLCH	oklch(41.79% 0.174 271.9)
XYZ	xyz(9.9419, 6.6199, 38.2822)
Luminance	0.0662 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303BA9 #A99E30

analogous

#3078A9 #303BA9 #6130A9

triadic

#303BA9 #A9303B #3BA930

tetradic

#303BA9 #A93078 #A99E30 #30A961

square

#303BA9 #A93078 #A99E30 #30A961

split-complementary

#303BA9 #A96130 #78A930

monochromatic

#151A4A #222A79 #303BA9 #4A56CC #7A83D9

Accessibility & contrast

On white

9.04

#303BA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#303BA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BA9

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BA9	#FFFFFF	#000000	##FFFFFF
##303BA9	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAC

Deuteranopia (green-blind)

#0043A7

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #303ba9;
/* rgb */ color: rgb(48, 59, 169);
/* oklch */ color: oklch(41.8% 0.174 271.9);

Tailwind

colors: {
  custom: {
    50: '#7971c4',
    500: '#303ba9',
    950: '#000000',
  },
}

SCSS

$custom: #303ba9;
$custom-light: #7971c4;
$custom-dark: #000000;

JSON

{
  "hex": "#303ba9",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 169
  },
  "hsl": {
    "h": 234.545,
    "s": 55.76,
    "l": 42.549
  },
  "oklch": {
    "l": 0.41794,
    "c": 0.17416,
    "h": 271.9
  },
  "luminance": 0.06621
}

Semantic roles & 50–950 ramp

primary

#303BA9

secondary

#C2BB73

accent

#D149DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #303BA9

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

Preview Lab → · Contrast checker → · Palette generator →