#303C8D#303C8D

#303C8D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.134 H 272.4°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#303C8D
RGB	rgb(48, 60, 141)
HSL	hsl(232, 49%, 37%)
HSV	hsv(232, 66%, 55%)
CMYK	cmyk(66%, 57.4%, 0%, 44.7%)
CIE-LAB	lab(28.86, 22.44, -46.59)
CIE-LCH	lch(28.86, 51.72, 295.72°)
OKLab	oklab(39.54% 0.0056 -0.1339)
OKLCH	oklch(39.54% 0.134 272.4)
XYZ	xyz(7.6409, 5.7825, 25.9076)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303C8D #8D8130

analogous

#306B8D #303C8D #53308D

triadic

#303C8D #8D303C #3C8D30

tetradic

#303C8D #8D306B #8D8130 #308D53

square

#303C8D #8D306B #8D8130 #308D53

split-complementary

#303C8D #8D5330 #6B8D30

monochromatic

#111532 #20295F #303C8D #404FBB #6B77CD

Accessibility & contrast

On white

9.74

#303C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#303C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303C8D

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303C8D	#FFFFFF	#000000	##FFFFFF
##303C8D	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#00408B

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #303c8d;
/* rgb */ color: rgb(48, 60, 141);
/* oklch */ color: oklch(39.5% 0.134 272.4);

Tailwind

colors: {
  custom: {
    50: '#7371af',
    500: '#303c8d',
    950: '#000000',
  },
}

SCSS

$custom: #303c8d;
$custom-light: #7371af;
$custom-dark: #000000;

JSON

{
  "hex": "#303c8d",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 141
  },
  "hsl": {
    "h": 232.258,
    "s": 49.206,
    "l": 37.059
  },
  "oklch": {
    "l": 0.3954,
    "c": 0.13406,
    "h": 272.4
  },
  "luminance": 0.05783
}

Semantic roles & 50–950 ramp

primary

#303C8D

secondary

#B4AA65

accent

#C74FD9

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #303C8D

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

Preview Lab → · Contrast checker → · Palette generator →