#303DC9#303DC9

#303DC9 is a mid, highly saturated blue. Relative luminance 0.082; OKLCH L 45.2% C 0.213 H 270.5°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#303DC9
RGB	rgb(48, 61, 201)
HSL	hsl(235, 61%, 49%)
HSV	hsv(235, 76%, 79%)
CMYK	cmyk(76.1%, 69.7%, 0%, 21.2%)
CIE-LAB	lab(34.36, 43.34, -73.53)
CIE-LCH	lch(34.36, 85.35, 300.52°)
OKLab	oklab(45.19% 0.0018 -0.2129)
OKLCH	oklch(45.19% 0.213 270.5)
XYZ	xyz(13.4267, 8.1814, 56.1186)
Luminance	0.0818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303DC9 #C9BC30

analogous

#308AC9 #303DC9 #7030C9

triadic

#303DC9 #C9303D #3DC930

tetradic

#303DC9 #C9308A #C9BC30 #30C970

square

#303DC9 #C9308A #C9BC30 #30C970

split-complementary

#303DC9 #C97030 #8AC930

monochromatic

#181F66 #242E98 #303DC9 #5E68D8 #8F96E4

Accessibility & contrast

On white

7.96

#303DC9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#303DC9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DC9

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DC9	#FFFFFF	#000000	##FFFFFF
##303DC9	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058CD

Deuteranopia (green-blind)

#0049C6

Tritanopia (blue-blind)

#00647E

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #303dc9;
/* rgb */ color: rgb(48, 61, 201);
/* oklch */ color: oklch(45.2% 0.213 270.5);

Tailwind

colors: {
  custom: {
    50: '#8173db',
    500: '#303dc9',
    950: '#000000',
  },
}

SCSS

$custom: #303dc9;
$custom-light: #8173db;
$custom-dark: #000000;

JSON

{
  "hex": "#303dc9",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 201
  },
  "hsl": {
    "h": 234.902,
    "s": 61.446,
    "l": 48.824
  },
  "oklch": {
    "l": 0.45192,
    "c": 0.21287,
    "h": 270.5
  },
  "luminance": 0.08183
}

Semantic roles & 50–950 ramp

primary

#303DC9

secondary

#CFC986

accent

#D743E5

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #303DC9

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

Preview Lab → · Contrast checker → · Palette generator →