#303BAF#303BAF

#303BAF is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.182 H 271.7°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#303BAF
RGB	rgb(48, 59, 175)
HSL	hsl(235, 57%, 44%)
HSV	hsv(235, 73%, 69%)
CMYK	cmyk(72.6%, 66.3%, 0%, 31.4%)
CIE-LAB	lab(31.46, 35.47, -62.96)
CIE-LCH	lch(31.46, 72.26, 299.39°)
OKLab	oklab(42.35% 0.0054 -0.182)
OKLCH	oklch(42.35% 0.182 271.7)
XYZ	xyz(10.5181, 6.8504, 41.3171)
Luminance	0.0685 (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

#303BAF #AFA430

analogous

#307AAF #303BAF #6430AF

triadic

#303BAF #AF303B #3BAF30

tetradic

#303BAF #AF307A #AFA430 #30AF64

square

#303BAF #AF307A #AFA430 #30AF64

split-complementary

#303BAF #AF6430 #7AAF30

monochromatic

#161B4F #232B7F #303BAF #4E59CE #7E86DC

Accessibility & contrast

On white

8.86

#303BAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#303BAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BAF

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BAF	#FFFFFF	#000000	##FFFFFF
##303BAF	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B3

Deuteranopia (green-blind)

#0044AD

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #303baf;
/* rgb */ color: rgb(48, 59, 175);
/* oklch */ color: oklch(42.4% 0.182 271.7);

Tailwind

colors: {
  custom: {
    50: '#7b71c8',
    500: '#303baf',
    950: '#000000',
  },
}

SCSS

$custom: #303baf;
$custom-light: #7b71c8;
$custom-dark: #000000;

JSON

{
  "hex": "#303baf",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 175
  },
  "hsl": {
    "h": 234.803,
    "s": 56.951,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42353,
    "c": 0.18207,
    "h": 271.7
  },
  "luminance": 0.06851
}

Semantic roles & 50–950 ramp

primary

#303BAF

secondary

#C4BE76

accent

#D348E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #303BAF

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

Preview Lab → · Contrast checker → · Palette generator →