#303BC1#303BC1

#303BC1 is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.1% C 0.205 H 271.0°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#303BC1
RGB	rgb(48, 59, 193)
HSL	hsl(235, 60%, 47%)
HSV	hsv(235, 75%, 76%)
CMYK	cmyk(75.1%, 69.4%, 0%, 24.3%)
CIE-LAB	lab(33.15, 41.79, -70.85)
CIE-LCH	lch(33.15, 82.25, 300.53°)
OKLab	oklab(44.09% 0.0037 -0.205)
OKLCH	oklch(44.09% 0.205 271)
XYZ	xyz(12.4053, 7.6052, 51.2559)
Luminance	0.0761 (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

#303BC1 #C1B630

analogous

#3084C1 #303BC1 #6D30C1

triadic

#303BC1 #C1303B #3BC130

tetradic

#303BC1 #C13084 #C1B630 #30C16D

square

#303BC1 #C13084 #C1B630 #30C16D

split-complementary

#303BC1 #C16D30 #84C130

monochromatic

#181D5F #242C90 #303BC1 #5962D6 #8A90E2

Accessibility & contrast

On white

8.33

#303BC1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#303BC1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BC1

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BC1	#FFFFFF	#000000	##FFFFFF
##303BC1	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C5

Deuteranopia (green-blind)

#0047BF

Tritanopia (blue-blind)

#006079

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #303bc1;
/* rgb */ color: rgb(48, 59, 193);
/* oklch */ color: oklch(44.1% 0.205 271.0);

Tailwind

colors: {
  custom: {
    50: '#7f71d5',
    500: '#303bc1',
    950: '#000000',
  },
}

SCSS

$custom: #303bc1;
$custom-light: #7f71d5;
$custom-dark: #000000;

JSON

{
  "hex": "#303bc1",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 193
  },
  "hsl": {
    "h": 235.448,
    "s": 60.166,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44086,
    "c": 0.20506,
    "h": 271
  },
  "luminance": 0.07607
}

Semantic roles & 50–950 ramp

primary

#303BC1

secondary

#CCC681

accent

#D744E3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #303BC1

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

Preview Lab → · Contrast checker → · Palette generator →