#303E91#303E91

#303E91 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.3% C 0.137 H 271.6°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#303E91
RGB	rgb(48, 62, 145)
HSL	hsl(231, 50%, 38%)
HSV	hsv(231, 67%, 57%)
CMYK	cmyk(66.9%, 57.2%, 0%, 43.1%)
CIE-LAB	lab(29.71, 22.57, -47.68)
CIE-LCH	lch(29.71, 52.75, 295.34°)
OKLab	oklab(40.27% 0.0038 -0.1371)
OKLCH	oklch(40.27% 0.137 271.6)
XYZ	xyz(8.0507, 6.1172, 27.5391)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E91 #918330

analogous

#306E91 #303E91 #523091

triadic

#303E91 #91303E #3E9130

tetradic

#303E91 #91306E #918330 #309152

square

#303E91 #91306E #918330 #309152

split-complementary

#303E91 #915230 #6E9130

monochromatic

#121735 #212A63 #303E91 #3F52BF #6D7BCF

Accessibility & contrast

On white

9.44

#303E91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#303E91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E91

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E91	#FFFFFF	#000000	##FFFFFF
##303E91	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A94

Deuteranopia (green-blind)

#00428F

Tritanopia (blue-blind)

#005261

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #303e91;
/* rgb */ color: rgb(48, 62, 145);
/* oklch */ color: oklch(40.3% 0.137 271.6);

Tailwind

colors: {
  custom: {
    50: '#7473b2',
    500: '#303e91',
    950: '#000000',
  },
}

SCSS

$custom: #303e91;
$custom-light: #7473b2;
$custom-dark: #000000;

JSON

{
  "hex": "#303e91",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 145
  },
  "hsl": {
    "h": 231.34,
    "s": 50.259,
    "l": 37.843
  },
  "oklch": {
    "l": 0.40272,
    "c": 0.13716,
    "h": 271.6
  },
  "luminance": 0.06118
}

Semantic roles & 50–950 ramp

primary

#303E91

secondary

#B6AB67

accent

#C64EDA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #303E91

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

Preview Lab → · Contrast checker → · Palette generator →