#303BB2#303BB2

#303BB2 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.186 H 271.6°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#303BB2
RGB	rgb(48, 59, 178)
HSL	hsl(235, 58%, 44%)
HSV	hsv(235, 73%, 70%)
CMYK	cmyk(73%, 66.9%, 0%, 30.2%)
CIE-LAB	lab(31.74, 36.53, -64.30)
CIE-LCH	lch(31.74, 73.95, 299.60°)
OKLab	oklab(42.64% 0.0052 -0.1859)
OKLCH	oklch(42.64% 0.186 271.6)
XYZ	xyz(10.8160, 6.9696, 42.8861)
Luminance	0.0697 (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

#303BB2 #B2A730

analogous

#307CB2 #303BB2 #6630B2

triadic

#303BB2 #B2303B #3BB230

tetradic

#303BB2 #B2307C #B2A730 #30B266

square

#303BB2 #B2307C #B2A730 #30B266

split-complementary

#303BB2 #B26630 #7CB230

monochromatic

#161B52 #232B82 #303BB2 #505AD0 #8088DD

Accessibility & contrast

On white

8.77

#303BB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#303BB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BB2

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BB2	#FFFFFF	#000000	##FFFFFF
##303BB2	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B6

Deuteranopia (green-blind)

#0045B0

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #303bb2;
/* rgb */ color: rgb(48, 59, 178);
/* oklch */ color: oklch(42.6% 0.186 271.6);

Tailwind

colors: {
  custom: {
    50: '#7c71ca',
    500: '#303bb2',
    950: '#000000',
  },
}

SCSS

$custom: #303bb2;
$custom-light: #7c71ca;
$custom-dark: #000000;

JSON

{
  "hex": "#303bb2",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 178
  },
  "hsl": {
    "h": 234.923,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42636,
    "c": 0.18598,
    "h": 271.6
  },
  "luminance": 0.06971
}

Semantic roles & 50–950 ramp

primary

#303BB2

secondary

#C6BF78

accent

#D447E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #303BB2

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

Preview Lab → · Contrast checker → · Palette generator →