#303AB8#303AB8

#303AB8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.195 H 271.5°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#303AB8
RGB	rgb(48, 58, 184)
HSL	hsl(236, 59%, 45%)
HSV	hsv(236, 74%, 72%)
CMYK	cmyk(73.9%, 68.5%, 0%, 27.8%)
CIE-LAB	lab(32.06, 39.27, -67.32)
CIE-LCH	lch(32.06, 77.94, 300.25°)
OKLab	oklab(43.04% 0.0052 -0.1947)
OKLCH	oklch(43.04% 0.195 271.5)
XYZ	xyz(11.3808, 7.1140, 46.1115)
Luminance	0.0712 (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

#303AB8 #B8AE30

analogous

#307EB8 #303AB8 #6A30B8

triadic

#303AB8 #B8303A #3AB830

tetradic

#303AB8 #B8307E #B8AE30 #30B86A

square

#303AB8 #B8307E #B8AE30 #30B86A

split-complementary

#303AB8 #B86A30 #7EB830

monochromatic

#171B57 #232B87 #303AB8 #535CD2 #848ADF

Accessibility & contrast

On white

8.67

#303AB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#303AB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AB8

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AB8	#FFFFFF	#000000	##FFFFFF
##303AB8	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BC

Deuteranopia (green-blind)

#0045B6

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #303ab8;
/* rgb */ color: rgb(48, 58, 184);
/* oklch */ color: oklch(43.0% 0.195 271.5);

Tailwind

colors: {
  custom: {
    50: '#7d71ce',
    500: '#303ab8',
    950: '#000000',
  },
}

SCSS

$custom: #303ab8;
$custom-light: #7d71ce;
$custom-dark: #000000;

JSON

{
  "hex": "#303ab8",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 184
  },
  "hsl": {
    "h": 235.588,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43044,
    "c": 0.19481,
    "h": 271.5
  },
  "luminance": 0.07115
}

Semantic roles & 50–950 ramp

primary

#303AB8

secondary

#C8C27C

accent

#D646E2

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #303AB8

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

Preview Lab → · Contrast checker → · Palette generator →