#303A91#303A91

#303A91 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.142 H 273.0°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#303A91
RGB	rgb(48, 58, 145)
HSL	hsl(234, 50%, 38%)
HSV	hsv(234, 67%, 57%)
CMYK	cmyk(66.9%, 60%, 0%, 43.1%)
CIE-LAB	lab(28.64, 25.26, -49.41)
CIE-LCH	lch(28.64, 55.49, 297.07°)
OKLab	oklab(39.48% 0.0075 -0.1423)
OKLCH	oklch(39.48% 0.142 273)
XYZ	xyz(7.8411, 5.6981, 27.4692)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303A91 #918730

analogous

#306B91 #303A91 #563091

triadic

#303A91 #91303A #3A9130

tetradic

#303A91 #91306B #918730 #309156

square

#303A91 #91306B #918730 #309156

split-complementary

#303A91 #915630 #6B9130

monochromatic

#121535 #212863 #303A91 #3F4CBF #6D77CF

Accessibility & contrast

On white

9.81

#303A91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#303A91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303A91

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303A91	#FFFFFF	#000000	##FFFFFF
##303A91	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004894

Deuteranopia (green-blind)

#003F8F

Tritanopia (blue-blind)

#004F5F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #303a91;
/* rgb */ color: rgb(48, 58, 145);
/* oklch */ color: oklch(39.5% 0.142 273.0);

Tailwind

colors: {
  custom: {
    50: '#7470b2',
    500: '#303a91',
    950: '#000000',
  },
}

SCSS

$custom: #303a91;
$custom-light: #7470b2;
$custom-dark: #000000;

JSON

{
  "hex": "#303a91",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 145
  },
  "hsl": {
    "h": 233.814,
    "s": 50.259,
    "l": 37.843
  },
  "oklch": {
    "l": 0.39476,
    "c": 0.14246,
    "h": 273
  },
  "luminance": 0.05699
}

Semantic roles & 50–950 ramp

primary

#303A91

secondary

#B6AE67

accent

#CB4EDA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #303A91

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

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