#303E8D#303E8D

#303E8D is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.9% C 0.131 H 271.6°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#303E8D
RGB	rgb(48, 62, 141)
HSL	hsl(231, 49%, 37%)
HSV	hsv(231, 66%, 55%)
CMYK	cmyk(66%, 56%, 0%, 44.7%)
CIE-LAB	lab(29.40, 21.09, -45.71)
CIE-LCH	lch(29.40, 50.34, 294.77°)
OKLab	oklab(39.95% 0.0036 -0.1313)
OKLCH	oklch(39.95% 0.131 271.6)
XYZ	xyz(7.7477, 5.9960, 25.9432)
Luminance	0.0600 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303E8D #8D7F30

analogous

#306D8D #303E8D #51308D

triadic

#303E8D #8D303E #3E8D30

tetradic

#303E8D #8D306D #8D7F30 #308D51

square

#303E8D #8D306D #8D7F30 #308D51

split-complementary

#303E8D #8D5130 #6D8D30

monochromatic

#111632 #202A5F #303E8D #4052BB #6B7ACD

Accessibility & contrast

On white

9.55

#303E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#303E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303E8D

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303E8D	#FFFFFF	#000000	##FFFFFF
##303E8D	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)

#024A90

Deuteranopia (green-blind)

#00418B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #303e8d;
/* rgb */ color: rgb(48, 62, 141);
/* oklch */ color: oklch(39.9% 0.131 271.6);

Tailwind

colors: {
  custom: {
    50: '#7373af',
    500: '#303e8d',
    950: '#000000',
  },
}

SCSS

$custom: #303e8d;
$custom-light: #7373af;
$custom-dark: #000000;

JSON

{
  "hex": "#303e8d",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 141
  },
  "hsl": {
    "h": 230.968,
    "s": 49.206,
    "l": 37.059
  },
  "oklch": {
    "l": 0.39948,
    "c": 0.13137,
    "h": 271.6
  },
  "luminance": 0.05997
}

Semantic roles & 50–950 ramp

primary

#303E8D

secondary

#B4A865

accent

#C44FD9

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #303E8D

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

Preview Lab → · Contrast checker → · Palette generator →