#303C7D#303C7D

#303C7D is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.3% C 0.110 H 272.3°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#303C7D
RGB	rgb(48, 60, 125)
HSL	hsl(231, 45%, 34%)
HSV	hsv(231, 62%, 49%)
CMYK	cmyk(61.6%, 52%, 0%, 51%)
CIE-LAB	lab(27.68, 16.55, -38.53)
CIE-LCH	lch(27.68, 41.94, 293.24°)
OKLab	oklab(38.28% 0.0044 -0.1102)
OKLCH	oklch(38.28% 0.11 272.3)
XYZ	xyz(6.5352, 5.3403, 20.0844)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303C7D #7D7130

analogous

#30637D #303C7D #4B307D

triadic

#303C7D #7D303C #3C7D30

tetradic

#303C7D #7D3063 #7D7130 #307D4B

square

#303C7D #7D3063 #7D7130 #307D4B

split-complementary

#303C7D #7D4B30 #637D30

monochromatic

#0E1225 #1F2751 #303C7D #4151A9 #6473C3

Accessibility & contrast

On white

10.15

#303C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#303C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303C7D

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303C7D	#FFFFFF	#000000	##FFFFFF
##303C7D	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A457F

Deuteranopia (green-blind)

#0A3E7C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #303c7d;
/* rgb */ color: rgb(48, 60, 125);
/* oklch */ color: oklch(38.3% 0.110 272.3);

Tailwind

colors: {
  custom: {
    50: '#7071a3',
    500: '#303c7d',
    950: '#000000',
  },
}

SCSS

$custom: #303c7d;
$custom-light: #7071a3;
$custom-dark: #000000;

JSON

{
  "hex": "#303c7d",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 125
  },
  "hsl": {
    "h": 230.649,
    "s": 44.509,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38283,
    "c": 0.11032,
    "h": 272.3
  },
  "luminance": 0.05341
}

Semantic roles & 50–950 ramp

primary

#303C7D

secondary

#AB9F5E

accent

#C054D4

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #303C7D

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

Preview Lab → · Contrast checker → · Palette generator →