#303EB2#303EB2

#303EB2 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.182 H 271.0°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#303EB2
RGB	rgb(48, 62, 178)
HSL	hsl(234, 58%, 44%)
HSV	hsv(234, 73%, 70%)
CMYK	cmyk(73%, 65.2%, 0%, 30.2%)
CIE-LAB	lab(32.45, 34.63, -63.13)
CIE-LCH	lch(32.45, 72.00, 298.75°)
OKLab	oklab(43.16% 0.0033 -0.1825)
OKLCH	oklch(43.16% 0.182 271)
XYZ	xyz(10.9747, 7.2869, 42.9390)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.70

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303EB2 #B2A430

analogous

#307FB2 #303EB2 #6330B2

triadic

#303EB2 #B2303E #3EB230

tetradic

#303EB2 #B2307F #B2A430 #30B263

square

#303EB2 #B2307F #B2A430 #30B263

split-complementary

#303EB2 #B26330 #7FB230

monochromatic

#161C52 #232D82 #303EB2 #505DD0 #808ADD

Accessibility & contrast

On white

8.54

#303EB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#303EB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EB2

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EB2	#FFFFFF	#000000	##FFFFFF
##303EB2	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0046B0

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303eb2;
/* rgb */ color: rgb(48, 62, 178);
/* oklch */ color: oklch(43.2% 0.182 271.0);

Tailwind

colors: {
  custom: {
    50: '#7b73ca',
    500: '#303eb2',
    950: '#000000',
  },
}

SCSS

$custom: #303eb2;
$custom-light: #7b73ca;
$custom-dark: #000000;

JSON

{
  "hex": "#303eb2",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 178
  },
  "hsl": {
    "h": 233.538,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43157,
    "c": 0.18249,
    "h": 271
  },
  "luminance": 0.07288
}

Semantic roles & 50–950 ramp

primary

#303EB2

secondary

#C6BD78

accent

#D047E1

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303EB2

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

Preview Lab → · Contrast checker → · Palette generator →