#303A9E#303A9E

#303A9E is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.6% C 0.161 H 272.6°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#303A9E
RGB	rgb(48, 58, 158)
HSL	hsl(235, 53%, 40%)
HSV	hsv(235, 70%, 62%)
CMYK	cmyk(69.6%, 63.3%, 0%, 38%)
CIE-LAB	lab(29.72, 30.00, -55.59)
CIE-LCH	lch(29.72, 63.17, 298.35°)
OKLab	oklab(40.61% 0.0072 -0.1604)
OKLCH	oklch(40.61% 0.161 272.6)
XYZ	xyz(8.9015, 6.1223, 33.0537)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303A9E #9E9430

analogous

#30719E #303A9E #5D309E

triadic

#303A9E #9E303A #3A9E30

tetradic

#303A9E #9E3071 #9E9430 #309E5D

square

#303A9E #9E3071 #9E9430 #309E5D

split-complementary

#303A9E #9E5D30 #719E30

monochromatic

#131840 #22296F #303A9E #4551C6 #747DD5

Accessibility & contrast

On white

9.44

#303A9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#303A9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303A9E

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303A9E	#FFFFFF	#000000	##FFFFFF
##303A9E	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#00419C

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #303a9e;
/* rgb */ color: rgb(48, 58, 158);
/* oklch */ color: oklch(40.6% 0.161 272.6);

Tailwind

colors: {
  custom: {
    50: '#7770bc',
    500: '#303a9e',
    950: '#000000',
  },
}

SCSS

$custom: #303a9e;
$custom-light: #7770bc;
$custom-dark: #000000;

JSON

{
  "hex": "#303a9e",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 158
  },
  "hsl": {
    "h": 234.545,
    "s": 53.398,
    "l": 40.392
  },
  "oklch": {
    "l": 0.40612,
    "c": 0.16056,
    "h": 272.6
  },
  "luminance": 0.06123
}

Semantic roles & 50–950 ramp

primary

#303A9E

secondary

#BDB56D

accent

#D04BDD

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303A9E

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

Preview Lab → · Contrast checker → · Palette generator →