#303A99#303A99

#303A99 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.154 H 272.8°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#303A99
RGB	rgb(48, 58, 153)
HSL	hsl(234, 52%, 39%)
HSV	hsv(234, 69%, 60%)
CMYK	cmyk(68.6%, 62.1%, 0%, 40%)
CIE-LAB	lab(29.30, 28.18, -53.24)
CIE-LCH	lch(29.30, 60.24, 297.89°)
OKLab	oklab(40.17% 0.0074 -0.1535)
OKLCH	oklch(40.17% 0.154 272.8)
XYZ	xyz(8.4798, 5.9536, 30.8331)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303A99 #998F30

analogous

#306F99 #303A99 #5B3099

triadic

#303A99 #99303A #3A9930

tetradic

#303A99 #99306F #998F30 #30995B

square

#303A99 #99306F #998F30 #30995B

split-complementary

#303A99 #995B30 #6F9930

monochromatic

#13173C #21286A #303A99 #424FC4 #717AD2

Accessibility & contrast

On white

9.59

#303A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#303A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303A99

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303A99	#FFFFFF	#000000	##FFFFFF
##303A99	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9C

Deuteranopia (green-blind)

#004097

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #303a99;
/* rgb */ color: rgb(48, 58, 153);
/* oklch */ color: oklch(40.2% 0.154 272.8);

Tailwind

colors: {
  custom: {
    50: '#7670b8',
    500: '#303a99',
    950: '#000000',
  },
}

SCSS

$custom: #303a99;
$custom-light: #7670b8;
$custom-dark: #000000;

JSON

{
  "hex": "#303a99",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 153
  },
  "hsl": {
    "h": 234.286,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.40168,
    "c": 0.15368,
    "h": 272.8
  },
  "luminance": 0.05954
}

Semantic roles & 50–950 ramp

primary

#303A99

secondary

#BAB36B

accent

#CE4CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #303A99

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

Preview Lab → · Contrast checker → · Palette generator →