#303BB7#303BB7

#303BB7 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.192 H 271.4°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#303BB7
RGB	rgb(48, 59, 183)
HSL	hsl(235, 58%, 45%)
HSV	hsv(235, 74%, 72%)
CMYK	cmyk(73.8%, 67.8%, 0%, 28.2%)
CIE-LAB	lab(32.20, 38.30, -66.51)
CIE-LCH	lch(32.20, 76.75, 299.93°)
OKLab	oklab(43.11% 0.0047 -0.1924)
OKLCH	oklch(43.11% 0.192 271.4)
XYZ	xyz(11.3272, 7.1740, 45.5783)
Luminance	0.0717 (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

#303BB7 #B7AC30

analogous

#307FB7 #303BB7 #6830B7

triadic

#303BB7 #B7303B #3BB730

tetradic

#303BB7 #B7307F #B7AC30 #30B768

square

#303BB7 #B7307F #B7AC30 #30B768

split-complementary

#303BB7 #B76830 #7FB730

monochromatic

#171C56 #232B87 #303BB7 #525DD2 #838ADE

Accessibility & contrast

On white

8.62

#303BB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#303BB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BB7

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BB7	#FFFFFF	#000000	##FFFFFF
##303BB7	1.00	8.62	2.43	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BB

Deuteranopia (green-blind)

#0045B5

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303bb7;
/* rgb */ color: rgb(48, 59, 183);
/* oklch */ color: oklch(43.1% 0.192 271.4);

Tailwind

colors: {
  custom: {
    50: '#7d71ce',
    500: '#303bb7',
    950: '#000000',
  },
}

SCSS

$custom: #303bb7;
$custom-light: #7d71ce;
$custom-dark: #000000;

JSON

{
  "hex": "#303bb7",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 183
  },
  "hsl": {
    "h": 235.111,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43113,
    "c": 0.19242,
    "h": 271.4
  },
  "luminance": 0.07175
}

Semantic roles & 50–950 ramp

primary

#303BB7

secondary

#C8C17B

accent

#D546E2

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #303BB7

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

Preview Lab → · Contrast checker → · Palette generator →