#303BC5#303BC5

#303BC5 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.5% C 0.210 H 270.9°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#303BC5
RGB	rgb(48, 59, 197)
HSL	hsl(236, 61%, 48%)
HSV	hsv(236, 76%, 77%)
CMYK	cmyk(75.6%, 70.1%, 0%, 22.7%)
CIE-LAB	lab(33.53, 43.16, -72.55)
CIE-LCH	lch(33.53, 84.42, 300.75°)
OKLab	oklab(44.48% 0.0032 -0.21)
OKLCH	oklch(44.48% 0.21 270.9)
XYZ	xyz(12.8575, 7.7861, 53.6377)
Luminance	0.0779 (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

#303BC5 #C5BA30

analogous

#3086C5 #303BC5 #6F30C5

triadic

#303BC5 #C5303B #3BC530

tetradic

#303BC5 #C53086 #C5BA30 #30C56F

square

#303BC5 #C53086 #C5BA30 #30C56F

split-complementary

#303BC5 #C56F30 #86C530

monochromatic

#181E63 #242C94 #303BC5 #5B64D7 #8C93E3

Accessibility & contrast

On white

8.21

#303BC5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#303BC5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BC5

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BC5	#FFFFFF	#000000	##FFFFFF
##303BC5	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C9

Deuteranopia (green-blind)

#0048C2

Tritanopia (blue-blind)

#00617C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #303bc5;
/* rgb */ color: rgb(48, 59, 197);
/* oklch */ color: oklch(44.5% 0.210 270.9);

Tailwind

colors: {
  custom: {
    50: '#8072d8',
    500: '#303bc5',
    950: '#000000',
  },
}

SCSS

$custom: #303bc5;
$custom-light: #8072d8;
$custom-dark: #000000;

JSON

{
  "hex": "#303bc5",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 197
  },
  "hsl": {
    "h": 235.57,
    "s": 60.816,
    "l": 48.039
  },
  "oklch": {
    "l": 0.44481,
    "c": 0.21003,
    "h": 270.9
  },
  "luminance": 0.07788
}

Semantic roles & 50–950 ramp

primary

#303BC5

secondary

#CDC884

accent

#D844E4

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #303BC5

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

Preview Lab → · Contrast checker → · Palette generator →