#303DAA#303DAA

#303DAA is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.173 H 271.5°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#303DAA
RGB	rgb(48, 61, 170)
HSL	hsl(234, 56%, 43%)
HSV	hsv(234, 72%, 67%)
CMYK	cmyk(71.8%, 64.1%, 0%, 33.3%)
CIE-LAB	lab(31.50, 32.39, -59.91)
CIE-LCH	lch(31.50, 68.11, 298.40°)
OKLab	oklab(42.24% 0.0044 -0.173)
OKLCH	oklch(42.24% 0.173 271.5)
XYZ	xyz(10.1409, 6.8671, 38.8135)
Luminance	0.0687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303DAA #AA9D30

analogous

#307AAA #303DAA #6030AA

triadic

#303DAA #AA303D #3DAA30

tetradic

#303DAA #AA307A #AA9D30 #30AA60

square

#303DAA #AA307A #AA9D30 #30AA60

split-complementary

#303DAA #AA6030 #7AAA30

monochromatic

#151B4B #232C7A #303DAA #4B59CC #7B85DA

Accessibility & contrast

On white

8.85

#303DAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#303DAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DAA

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DAA	#FFFFFF	#000000	##FFFFFF
##303DAA	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AD

Deuteranopia (green-blind)

#0045A8

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #303daa;
/* rgb */ color: rgb(48, 61, 170);
/* oklch */ color: oklch(42.2% 0.173 271.5);

Tailwind

colors: {
  custom: {
    50: '#7a72c4',
    500: '#303daa',
    950: '#000000',
  },
}

SCSS

$custom: #303daa;
$custom-light: #7a72c4;
$custom-dark: #000000;

JSON

{
  "hex": "#303daa",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 170
  },
  "hsl": {
    "h": 233.607,
    "s": 55.963,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42244,
    "c": 0.1731,
    "h": 271.5
  },
  "luminance": 0.06868
}

Semantic roles & 50–950 ramp

primary

#303DAA

secondary

#C2BA74

accent

#CF49DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #303DAA

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

Preview Lab → · Contrast checker → · Palette generator →