#303AA4#303AA4

#303AA4 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.2% C 0.169 H 272.3°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#303AA4
RGB	rgb(48, 58, 164)
HSL	hsl(235, 55%, 42%)
HSV	hsv(235, 71%, 64%)
CMYK	cmyk(70.7%, 64.6%, 0%, 35.7%)
CIE-LAB	lab(30.24, 32.17, -58.37)
CIE-LCH	lch(30.24, 66.64, 298.86°)
OKLab	oklab(41.16% 0.0069 -0.1685)
OKLCH	oklch(41.16% 0.169 272.3)
XYZ	xyz(9.4306, 6.3339, 35.8403)
Luminance	0.0634 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303AA4 #A49A30

analogous

#3074A4 #303AA4 #6030A4

triadic

#303AA4 #A4303A #3AA430

tetradic

#303AA4 #A43074 #A49A30 #30A460

square

#303AA4 #A43074 #A49A30 #30A460

split-complementary

#303AA4 #A46030 #74A430

monochromatic

#141945 #222975 #303AA4 #4853C9 #777FD7

Accessibility & contrast

On white

9.26

#303AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#303AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AA4

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AA4	#FFFFFF	#000000	##FFFFFF
##303AA4	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA7

Deuteranopia (green-blind)

#0042A2

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #303aa4;
/* rgb */ color: rgb(48, 58, 164);
/* oklch */ color: oklch(41.2% 0.169 272.3);

Tailwind

colors: {
  custom: {
    50: '#7870c0',
    500: '#303aa4',
    950: '#000000',
  },
}

SCSS

$custom: #303aa4;
$custom-light: #7870c0;
$custom-dark: #000000;

JSON

{
  "hex": "#303aa4",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 164
  },
  "hsl": {
    "h": 234.828,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41156,
    "c": 0.16868,
    "h": 272.3
  },
  "luminance": 0.06335
}

Semantic roles & 50–950 ramp

primary

#303AA4

secondary

#BFB970

accent

#D14ADE

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303AA4

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

Preview Lab → · Contrast checker → · Palette generator →