#303F97#303F97

#303F97 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.144 H 271.2°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#303F97
RGB	rgb(48, 63, 151)
HSL	hsl(231, 52%, 39%)
HSV	hsv(231, 68%, 59%)
CMYK	cmyk(68.2%, 58.3%, 0%, 40.8%)
CIE-LAB	lab(30.44, 24.12, -50.16)
CIE-LCH	lch(30.44, 55.66, 295.69°)
OKLab	oklab(40.97% 0.0031 -0.1444)
OKLCH	oklch(40.97% 0.144 271.2)
XYZ	xyz(8.5805, 6.4170, 30.0586)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303F97 #978830

analogous

#307397 #303F97 #553097

triadic

#303F97 #97303F #3F9730

tetradic

#303F97 #973073 #978830 #309755

square

#303F97 #973073 #978830 #309755

split-complementary

#303F97 #975530 #739730

monochromatic

#12183A #212C69 #303F97 #4154C3 #707ED2

Accessibility & contrast

On white

9.20

#303F97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#303F97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303F97

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303F97	#FFFFFF	#000000	##FFFFFF
##303F97	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9A

Deuteranopia (green-blind)

#004395

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303f97;
/* rgb */ color: rgb(48, 63, 151);
/* oklch */ color: oklch(41.0% 0.144 271.2);

Tailwind

colors: {
  custom: {
    50: '#7573b6',
    500: '#303f97',
    950: '#000000',
  },
}

SCSS

$custom: #303f97;
$custom-light: #7573b6;
$custom-dark: #000000;

JSON

{
  "hex": "#303f97",
  "rgb": {
    "r": 48,
    "g": 63,
    "b": 151
  },
  "hsl": {
    "h": 231.262,
    "s": 51.759,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40968,
    "c": 0.14441,
    "h": 271.2
  },
  "luminance": 0.06418
}

Semantic roles & 50–950 ramp

primary

#303F97

secondary

#B9AE6A

accent

#C64DDB

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #303F97

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

Preview Lab → · Contrast checker → · Palette generator →