#303C83#303C83

#303C83 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.7% C 0.119 H 272.4°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#303C83
RGB	rgb(48, 60, 131)
HSL	hsl(231, 46%, 35%)
HSV	hsv(231, 63%, 51%)
CMYK	cmyk(63.4%, 54.2%, 0%, 48.6%)
CIE-LAB	lab(28.11, 18.76, -41.60)
CIE-LCH	lch(28.11, 45.63, 294.27°)
OKLab	oklab(38.74% 0.005 -0.1192)
OKLCH	oklch(38.74% 0.119 272.4)
XYZ	xyz(6.9302, 5.4982, 22.1644)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303C83 #837730

analogous

#306683 #303C83 #4D3083

triadic

#303C83 #83303C #3C8330

tetradic

#303C83 #833066 #837730 #30834D

square

#303C83 #833066 #837730 #30834D

split-complementary

#303C83 #834D30 #668330

monochromatic

#0F1329 #202756 #303C83 #4051B0 #6674C7

Accessibility & contrast

On white

10.00

#303C83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#303C83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303C83

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303C83	#FFFFFF	#000000	##FFFFFF
##303C83	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114686

Deuteranopia (green-blind)

#003F82

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #303c83;
/* rgb */ color: rgb(48, 60, 131);
/* oklch */ color: oklch(38.7% 0.119 272.4);

Tailwind

colors: {
  custom: {
    50: '#7171a8',
    500: '#303c83',
    950: '#000000',
  },
}

SCSS

$custom: #303c83;
$custom-light: #7171a8;
$custom-dark: #000000;

JSON

{
  "hex": "#303c83",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 131
  },
  "hsl": {
    "h": 231.325,
    "s": 46.369,
    "l": 35.098
  },
  "oklch": {
    "l": 0.38742,
    "c": 0.11936,
    "h": 272.4
  },
  "luminance": 0.05499
}

Semantic roles & 50–950 ramp

primary

#303C83

secondary

#AEA361

accent

#C352D6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #303C83

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

Preview Lab → · Contrast checker → · Palette generator →