#303BA3#303BA3

#303BA3 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.2% C 0.166 H 272.1°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#303BA3
RGB	rgb(48, 59, 163)
HSL	hsl(234, 55%, 41%)
HSV	hsv(234, 71%, 64%)
CMYK	cmyk(70.6%, 63.8%, 0%, 36.1%)
CIE-LAB	lab(30.40, 31.16, -57.50)
CIE-LCH	lch(30.40, 65.40, 298.45°)
OKLab	oklab(41.25% 0.0062 -0.166)
OKLCH	oklch(41.25% 0.166 272.1)
XYZ	xyz(9.3915, 6.3997, 35.3836)
Luminance	0.0640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303BA3 #A39830

analogous

#3075A3 #303BA3 #5F30A3

triadic

#303BA3 #A3303B #3BA330

tetradic

#303BA3 #A33075 #A39830 #30A35F

square

#303BA3 #A33075 #A39830 #30A35F

split-complementary

#303BA3 #A35F30 #75A330

monochromatic

#141944 #222A74 #303BA3 #4754C9 #7780D7

Accessibility & contrast

On white

9.21

#303BA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#303BA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BA3

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BA3	#FFFFFF	#000000	##FFFFFF
##303BA3	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA6

Deuteranopia (green-blind)

#0042A1

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303ba3;
/* rgb */ color: rgb(48, 59, 163);
/* oklch */ color: oklch(41.2% 0.166 272.1);

Tailwind

colors: {
  custom: {
    50: '#7871bf',
    500: '#303ba3',
    950: '#000000',
  },
}

SCSS

$custom: #303ba3;
$custom-light: #7871bf;
$custom-dark: #000000;

JSON

{
  "hex": "#303ba3",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 163
  },
  "hsl": {
    "h": 234.261,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41246,
    "c": 0.16612,
    "h": 272.1
  },
  "luminance": 0.06401
}

Semantic roles & 50–950 ramp

primary

#303BA3

secondary

#BFB770

accent

#D04ADE

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303BA3

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

Preview Lab → · Contrast checker → · Palette generator →