#303AB2#303AB2

#303AB2 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.187 H 271.8°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#303AB2
RGB	rgb(48, 58, 178)
HSL	hsl(235, 58%, 44%)
HSV	hsv(235, 73%, 70%)
CMYK	cmyk(73%, 67.4%, 0%, 30.2%)
CIE-LAB	lab(31.50, 37.16, -64.68)
CIE-LCH	lch(31.50, 74.60, 299.88°)
OKLab	oklab(42.47% 0.0058 -0.187)
OKLCH	oklch(42.47% 0.187 271.8)
XYZ	xyz(10.7651, 6.8677, 42.8691)
Luminance	0.0687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303AB2 #B2A830

analogous

#307BB2 #303AB2 #6730B2

triadic

#303AB2 #B2303A #3AB230

tetradic

#303AB2 #B2307B #B2A830 #30B267

square

#303AB2 #B2307B #B2A830 #30B267

split-complementary

#303AB2 #B26730 #7BB230

monochromatic

#161B52 #232A82 #303AB2 #5059D0 #8087DD

Accessibility & contrast

On white

8.85

#303AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#303AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AB2

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AB2	#FFFFFF	#000000	##FFFFFF
##303AB2	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0044B0

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #303ab2;
/* rgb */ color: rgb(48, 58, 178);
/* oklch */ color: oklch(42.5% 0.187 271.8);

Tailwind

colors: {
  custom: {
    50: '#7c70ca',
    500: '#303ab2',
    950: '#000000',
  },
}

SCSS

$custom: #303ab2;
$custom-light: #7c70ca;
$custom-dark: #000000;

JSON

{
  "hex": "#303ab2",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 178
  },
  "hsl": {
    "h": 235.385,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42466,
    "c": 0.18712,
    "h": 271.8
  },
  "luminance": 0.06869
}

Semantic roles & 50–950 ramp

primary

#303AB2

secondary

#C6C078

accent

#D547E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #303AB2

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

Preview Lab → · Contrast checker → · Palette generator →