#303B97#303B97

#303B97 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.150 H 272.5°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#303B97
RGB	rgb(48, 59, 151)
HSL	hsl(234, 52%, 39%)
HSV	hsv(234, 68%, 59%)
CMYK	cmyk(68.2%, 60.9%, 0%, 40.8%)
CIE-LAB	lab(29.39, 26.79, -51.87)
CIE-LCH	lch(29.39, 58.38, 297.31°)
OKLab	oklab(40.18% 0.0066 -0.1495)
OKLCH	oklch(40.18% 0.15 272.5)
XYZ	xyz(8.3669, 5.9899, 29.9874)
Luminance	0.0599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303B97 #978C30

analogous

#306F97 #303B97 #593097

triadic

#303B97 #97303B #3B9730

tetradic

#303B97 #97306F #978C30 #309759

square

#303B97 #97306F #978C30 #309759

split-complementary

#303B97 #975930 #6F9730

monochromatic

#12173A #212969 #303B97 #414FC3 #707AD2

Accessibility & contrast

On white

9.55

#303B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#303B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303B97

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303B97	#FFFFFF	#000000	##FFFFFF
##303B97	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9A

Deuteranopia (green-blind)

#004195

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #303b97;
/* rgb */ color: rgb(48, 59, 151);
/* oklch */ color: oklch(40.2% 0.150 272.5);

Tailwind

colors: {
  custom: {
    50: '#7570b6',
    500: '#303b97',
    950: '#000000',
  },
}

SCSS

$custom: #303b97;
$custom-light: #7570b6;
$custom-dark: #000000;

JSON

{
  "hex": "#303b97",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 151
  },
  "hsl": {
    "h": 233.592,
    "s": 51.759,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40184,
    "c": 0.14962,
    "h": 272.5
  },
  "luminance": 0.05991
}

Semantic roles & 50–950 ramp

primary

#303B97

secondary

#B9B16A

accent

#CC4DDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #303B97

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

Preview Lab → · Contrast checker → · Palette generator →