#303DB2#303DB2

#303DB2 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.184 H 271.2°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#303DB2
RGB	rgb(48, 61, 178)
HSL	hsl(234, 58%, 44%)
HSV	hsv(234, 73%, 70%)
CMYK	cmyk(73%, 65.7%, 0%, 30.2%)
CIE-LAB	lab(32.21, 35.27, -63.52)
CIE-LCH	lch(32.21, 72.66, 299.04°)
OKLab	oklab(42.98% 0.0039 -0.1836)
OKLCH	oklch(42.98% 0.184 271.2)
XYZ	xyz(10.9208, 7.1791, 42.9210)
Luminance	0.0718 (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

#303DB2 #B2A530

analogous

#307EB2 #303DB2 #6430B2

triadic

#303DB2 #B2303D #3DB230

tetradic

#303DB2 #B2307E #B2A530 #30B264

square

#303DB2 #B2307E #B2A530 #30B264

split-complementary

#303DB2 #B26430 #7EB230

monochromatic

#161C52 #232C82 #303DB2 #505CD0 #8089DD

Accessibility & contrast

On white

8.62

#303DB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#303DB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DB2

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DB2	#FFFFFF	#000000	##FFFFFF
##303DB2	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	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: #303db2;
/* rgb */ color: rgb(48, 61, 178);
/* oklch */ color: oklch(43.0% 0.184 271.2);

Tailwind

colors: {
  custom: {
    50: '#7b72ca',
    500: '#303db2',
    950: '#000000',
  },
}

SCSS

$custom: #303db2;
$custom-light: #7b72ca;
$custom-dark: #000000;

JSON

{
  "hex": "#303db2",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 178
  },
  "hsl": {
    "h": 234,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42982,
    "c": 0.18366,
    "h": 271.2
  },
  "luminance": 0.0718
}

Semantic roles & 50–950 ramp

primary

#303DB2

secondary

#C6BE78

accent

#D147E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303DB2

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

Preview Lab → · Contrast checker → · Palette generator →