#303D91#303D91

#303D91 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.1% C 0.138 H 272.0°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#303D91
RGB	rgb(48, 61, 145)
HSL	hsl(232, 50%, 38%)
HSV	hsv(232, 67%, 57%)
CMYK	cmyk(66.9%, 57.9%, 0%, 43.1%)
CIE-LAB	lab(29.44, 23.25, -48.12)
CIE-LCH	lch(29.44, 53.44, 295.79°)
OKLab	oklab(40.07% 0.0048 -0.1384)
OKLCH	oklch(40.07% 0.138 272)
XYZ	xyz(7.9968, 6.0095, 27.5211)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303D91 #918430

analogous

#306D91 #303D91 #543091

triadic

#303D91 #91303D #3D9130

tetradic

#303D91 #91306D #918430 #309154

square

#303D91 #91306D #918430 #309154

split-complementary

#303D91 #915430 #6D9130

monochromatic

#121635 #212A63 #303D91 #3F50BF #6D7ACF

Accessibility & contrast

On white

9.54

#303D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#303D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303D91

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303D91	#FFFFFF	#000000	##FFFFFF
##303D91	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A94

Deuteranopia (green-blind)

#00418F

Tritanopia (blue-blind)

#005161

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #303d91;
/* rgb */ color: rgb(48, 61, 145);
/* oklch */ color: oklch(40.1% 0.138 272.0);

Tailwind

colors: {
  custom: {
    50: '#7472b2',
    500: '#303d91',
    950: '#000000',
  },
}

SCSS

$custom: #303d91;
$custom-light: #7472b2;
$custom-dark: #000000;

JSON

{
  "hex": "#303d91",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 145
  },
  "hsl": {
    "h": 231.959,
    "s": 50.259,
    "l": 37.843
  },
  "oklch": {
    "l": 0.4007,
    "c": 0.13849,
    "h": 272
  },
  "luminance": 0.0601
}

Semantic roles & 50–950 ramp

primary

#303D91

secondary

#B6AB67

accent

#C74EDA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #303D91

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

Preview Lab → · Contrast checker → · Palette generator →