#303B7D#303B7D

#303B7D is a dark, moderate blue. Relative luminance 0.052; OKLCH L 38.1% C 0.112 H 272.9°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#303B7D
RGB	rgb(48, 59, 125)
HSL	hsl(231, 45%, 34%)
HSV	hsv(231, 62%, 49%)
CMYK	cmyk(61.6%, 52.8%, 0%, 51%)
CIE-LAB	lab(27.40, 17.23, -38.99)
CIE-LCH	lch(27.40, 42.63, 293.84°)
OKLab	oklab(38.07% 0.0056 -0.1116)
OKLCH	oklch(38.07% 0.112 272.9)
XYZ	xyz(6.4833, 5.2365, 20.0671)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303B7D #7D7230

analogous

#30627D #303B7D #4C307D

triadic

#303B7D #7D303B #3B7D30

tetradic

#303B7D #7D3062 #7D7230 #307D4C

square

#303B7D #7D3062 #7D7230 #307D4C

split-complementary

#303B7D #7D4C30 #627D30

monochromatic

#0E1125 #1F2651 #303B7D #4150A9 #6472C3

Accessibility & contrast

On white

10.26

#303B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#303B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303B7D

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303B7D	#FFFFFF	#000000	##FFFFFF
##303B7D	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17447F

Deuteranopia (green-blind)

#063D7C

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #303b7d;
/* rgb */ color: rgb(48, 59, 125);
/* oklch */ color: oklch(38.1% 0.112 272.9);

Tailwind

colors: {
  custom: {
    50: '#7070a3',
    500: '#303b7d',
    950: '#000000',
  },
}

SCSS

$custom: #303b7d;
$custom-light: #7070a3;
$custom-dark: #000000;

JSON

{
  "hex": "#303b7d",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 125
  },
  "hsl": {
    "h": 231.429,
    "s": 44.509,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38068,
    "c": 0.11173,
    "h": 272.9
  },
  "luminance": 0.05237
}

Semantic roles & 50–950 ramp

primary

#303B7D

secondary

#ABA05E

accent

#C254D4

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #303B7D

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

Preview Lab → · Contrast checker → · Palette generator →