#303DC5#303DC5

#303DC5 is a dark, highly saturated blue. Relative luminance 0.080; OKLCH L 44.8% C 0.208 H 270.6°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#303DC5
RGB	rgb(48, 61, 197)
HSL	hsl(235, 61%, 48%)
HSV	hsv(235, 76%, 77%)
CMYK	cmyk(75.6%, 69%, 0%, 22.7%)
CIE-LAB	lab(33.97, 41.96, -71.83)
CIE-LCH	lch(33.97, 83.19, 300.29°)
OKLab	oklab(44.8% 0.0022 -0.2079)
OKLCH	oklch(44.8% 0.208 270.6)
XYZ	xyz(12.9623, 7.9957, 53.6727)
Luminance	0.0800 (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

#303DC5 #C5B830

analogous

#3087C5 #303DC5 #6D30C5

triadic

#303DC5 #C5303D #3DC530

tetradic

#303DC5 #C53087 #C5B830 #30C56D

square

#303DC5 #C53087 #C5B830 #30C56D

split-complementary

#303DC5 #C56D30 #87C530

monochromatic

#181F63 #242E94 #303DC5 #5B66D7 #8C94E3

Accessibility & contrast

On white

8.08

#303DC5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#303DC5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DC5

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DC5	#FFFFFF	#000000	##FFFFFF
##303DC5	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C9

Deuteranopia (green-blind)

#0049C3

Tritanopia (blue-blind)

#00637C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #303dc5;
/* rgb */ color: rgb(48, 61, 197);
/* oklch */ color: oklch(44.8% 0.208 270.6);

Tailwind

colors: {
  custom: {
    50: '#8073d8',
    500: '#303dc5',
    950: '#000000',
  },
}

SCSS

$custom: #303dc5;
$custom-light: #8073d8;
$custom-dark: #000000;

JSON

{
  "hex": "#303dc5",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 197
  },
  "hsl": {
    "h": 234.765,
    "s": 60.816,
    "l": 48.039
  },
  "oklch": {
    "l": 0.44799,
    "c": 0.2079,
    "h": 270.6
  },
  "luminance": 0.07997
}

Semantic roles & 50–950 ramp

primary

#303DC5

secondary

#CDC784

accent

#D644E4

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #303DC5

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

Preview Lab → · Contrast checker → · Palette generator →