#303B72#303B72

#303B72 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.095 H 272.5°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#303B72
RGB	rgb(48, 59, 114)
HSL	hsl(230, 41%, 32%)
HSV	hsv(230, 58%, 45%)
CMYK	cmyk(57.9%, 48.2%, 0%, 55.3%)
CIE-LAB	lab(26.65, 13.22, -33.24)
CIE-LCH	lch(26.65, 35.77, 291.69°)
OKLab	oklab(37.26% 0.0042 -0.0947)
OKLCH	oklch(37.26% 0.095 272.5)
XYZ	xyz(5.8192, 4.9708, 16.5691)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303B72 #726730

analogous

#305C72 #303B72 #463072

triadic

#303B72 #72303B #3B7230

tetradic

#303B72 #72305C #726730 #307246

square

#303B72 #72305C #726730 #307246

split-complementary

#303B72 #724630 #5C7230

monochromatic

#0C0E1C #1E2547 #303B72 #42519D #6070BC

Accessibility & contrast

On white

10.53

#303B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#303B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303B72

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303B72	#FFFFFF	#000000	##FFFFFF
##303B72	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224274

Deuteranopia (green-blind)

#1A3C71

Tritanopia (blue-blind)

#0C4751

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #303b72;
/* rgb */ color: rgb(48, 59, 114);
/* oklch */ color: oklch(37.3% 0.095 272.5);

Tailwind

colors: {
  custom: {
    50: '#6e709b',
    500: '#303b72',
    950: '#000000',
  },
}

SCSS

$custom: #303b72;
$custom-light: #6e709b;
$custom-dark: #000000;

JSON

{
  "hex": "#303b72",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 114
  },
  "hsl": {
    "h": 230,
    "s": 40.741,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37261,
    "c": 0.09477,
    "h": 272.5
  },
  "luminance": 0.04971
}

Semantic roles & 50–950 ramp

primary

#303B72

secondary

#A3975B

accent

#BC57D1

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #303B72

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

Preview Lab → · Contrast checker → · Palette generator →