#303E81#303E81

#303E81 is a dark, moderate blue. Relative luminance 0.057; OKLCH L 39.0% C 0.114 H 271.3°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#303E81
RGB	rgb(48, 62, 129)
HSL	hsl(230, 46%, 35%)
HSV	hsv(230, 63%, 51%)
CMYK	cmyk(62.8%, 51.9%, 0%, 49.4%)
CIE-LAB	lab(28.53, 16.66, -39.67)
CIE-LCH	lch(28.53, 43.03, 292.78°)
OKLab	oklab(39.02% 0.0027 -0.1135)
OKLCH	oklch(39.02% 0.114 271.3)
XYZ	xyz(6.9027, 5.6580, 21.4930)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E81 #817330

analogous

#306681 #303E81 #4B3081

triadic

#303E81 #81303E #3E8130

tetradic

#303E81 #813066 #817330 #30814B

square

#303E81 #813066 #817330 #30814B

split-complementary

#303E81 #814B30 #668130

monochromatic

#0F1328 #1F2954 #303E81 #4153AE #6676C6

Accessibility & contrast

On white

9.85

#303E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#303E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E81

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E81	#FFFFFF	#000000	##FFFFFF
##303E81	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4783

Deuteranopia (green-blind)

#074080

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #303e81;
/* rgb */ color: rgb(48, 62, 129);
/* oklch */ color: oklch(39.0% 0.114 271.3);

Tailwind

colors: {
  custom: {
    50: '#7173a6',
    500: '#303e81',
    950: '#000000',
  },
}

SCSS

$custom: #303e81;
$custom-light: #7173a6;
$custom-dark: #000000;

JSON

{
  "hex": "#303e81",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 129
  },
  "hsl": {
    "h": 229.63,
    "s": 45.763,
    "l": 34.706
  },
  "oklch": {
    "l": 0.39016,
    "c": 0.11358,
    "h": 271.3
  },
  "luminance": 0.05659
}

Semantic roles & 50–950 ramp

primary

#303E81

secondary

#ADA060

accent

#BF52D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #303E81

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

Preview Lab → · Contrast checker → · Palette generator →