#303CBD#303CBD

#303CBD is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.9% C 0.199 H 271.0°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#303CBD
RGB	rgb(48, 60, 189)
HSL	hsl(235, 59%, 46%)
HSV	hsv(235, 75%, 74%)
CMYK	cmyk(74.6%, 68.3%, 0%, 25.9%)
CIE-LAB	lab(32.99, 39.79, -68.75)
CIE-LCH	lch(32.99, 79.43, 300.06°)
OKLab	oklab(43.86% 0.0036 -0.1989)
OKLCH	oklch(43.86% 0.199 271)
XYZ	xyz(12.0170, 7.5329, 48.9549)
Luminance	0.0753 (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

#303CBD #BDB130

analogous

#3083BD #303CBD #6B30BD

triadic

#303CBD #BD303C #3CBD30

tetradic

#303CBD #BD3083 #BDB130 #30BD6B

square

#303CBD #BD3083 #BDB130 #30BD6B

split-complementary

#303CBD #BD6B30 #83BD30

monochromatic

#171D5B #242D8C #303CBD #5661D4 #878FE0

Accessibility & contrast

On white

8.38

#303CBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#303CBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303CBD

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303CBD	#FFFFFF	#000000	##FFFFFF
##303CBD	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C1

Deuteranopia (green-blind)

#0047BB

Tritanopia (blue-blind)

#005F77

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #303cbd;
/* rgb */ color: rgb(48, 60, 189);
/* oklch */ color: oklch(43.9% 0.199 271.0);

Tailwind

colors: {
  custom: {
    50: '#7e72d2',
    500: '#303cbd',
    950: '#000000',
  },
}

SCSS

$custom: #303cbd;
$custom-light: #7e72d2;
$custom-dark: #000000;

JSON

{
  "hex": "#303cbd",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 189
  },
  "hsl": {
    "h": 234.894,
    "s": 59.494,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43858,
    "c": 0.19895,
    "h": 271
  },
  "luminance": 0.07534
}

Semantic roles & 50–950 ramp

primary

#303CBD

secondary

#CAC47F

accent

#D545E3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #303CBD

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

Preview Lab → · Contrast checker → · Palette generator →