#303BAC#303BAC

#303BAC is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.1% C 0.178 H 271.8°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#303BAC
RGB	rgb(48, 59, 172)
HSL	hsl(235, 56%, 43%)
HSV	hsv(235, 72%, 67%)
CMYK	cmyk(72.1%, 65.7%, 0%, 32.5%)
CIE-LAB	lab(31.19, 34.40, -61.61)
CIE-LCH	lch(31.19, 70.56, 299.17°)
OKLab	oklab(42.07% 0.0057 -0.178)
OKLCH	oklch(42.07% 0.178 271.8)
XYZ	xyz(10.2268, 6.7338, 39.7825)
Luminance	0.0673 (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

#303BAC #ACA130

analogous

#3079AC #303BAC #6330AC

triadic

#303BAC #AC303B #3BAC30

tetradic

#303BAC #AC3079 #ACA130 #30AC63

square

#303BAC #AC3079 #ACA130 #30AC63

split-complementary

#303BAC #AC6330 #79AC30

monochromatic

#151A4C #232B7C #303BAC #4C58CD #7C84DA

Accessibility & contrast

On white

8.95

#303BAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#303BAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BAC

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BAC	#FFFFFF	#000000	##FFFFFF
##303BAC	1.00	8.95	2.35	8.95
#FFFFFF	8.95	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0044AA

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #303bac;
/* rgb */ color: rgb(48, 59, 172);
/* oklch */ color: oklch(42.1% 0.178 271.8);

Tailwind

colors: {
  custom: {
    50: '#7a71c6',
    500: '#303bac',
    950: '#000000',
  },
}

SCSS

$custom: #303bac;
$custom-light: #7a71c6;
$custom-dark: #000000;

JSON

{
  "hex": "#303bac",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 172
  },
  "hsl": {
    "h": 234.677,
    "s": 56.364,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42072,
    "c": 0.17813,
    "h": 271.8
  },
  "luminance": 0.06735
}

Semantic roles & 50–950 ramp

primary

#303BAC

secondary

#C3BC75

accent

#D248E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #303BAC

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

Preview Lab → · Contrast checker → · Palette generator →