#303D8D#303D8D

#303D8D is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.7% C 0.133 H 272.0°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#303D8D
RGB	rgb(48, 61, 141)
HSL	hsl(232, 49%, 37%)
HSV	hsv(232, 66%, 55%)
CMYK	cmyk(66%, 56.7%, 0%, 44.7%)
CIE-LAB	lab(29.13, 21.77, -46.15)
CIE-LCH	lch(29.13, 51.03, 295.25°)
OKLab	oklab(39.74% 0.0046 -0.1326)
OKLCH	oklch(39.74% 0.133 272)
XYZ	xyz(7.6938, 5.8883, 25.9252)
Luminance	0.0589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303D8D #8D8030

analogous

#306C8D #303D8D #52308D

triadic

#303D8D #8D303D #3D8D30

tetradic

#303D8D #8D306C #8D8030 #308D52

square

#303D8D #8D306C #8D8030 #308D52

split-complementary

#303D8D #8D5230 #6C8D30

monochromatic

#111532 #20295F #303D8D #4051BB #6B78CD

Accessibility & contrast

On white

9.64

#303D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#303D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303D8D

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303D8D	#FFFFFF	#000000	##FFFFFF
##303D8D	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004990

Deuteranopia (green-blind)

#00418B

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #303d8d;
/* rgb */ color: rgb(48, 61, 141);
/* oklch */ color: oklch(39.7% 0.133 272.0);

Tailwind

colors: {
  custom: {
    50: '#7372af',
    500: '#303d8d',
    950: '#000000',
  },
}

SCSS

$custom: #303d8d;
$custom-light: #7372af;
$custom-dark: #000000;

JSON

{
  "hex": "#303d8d",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 141
  },
  "hsl": {
    "h": 231.613,
    "s": 49.206,
    "l": 37.059
  },
  "oklch": {
    "l": 0.39743,
    "c": 0.13271,
    "h": 272
  },
  "luminance": 0.05889
}

Semantic roles & 50–950 ramp

primary

#303D8D

secondary

#B4A965

accent

#C64FD9

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #303D8D

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

Preview Lab → · Contrast checker → · Palette generator →