#303ABB#303ABB

#303ABB is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.3% C 0.199 H 271.4°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#303ABB
RGB	rgb(48, 58, 187)
HSL	hsl(236, 59%, 46%)
HSV	hsv(236, 74%, 73%)
CMYK	cmyk(74.3%, 69%, 0%, 26.7%)
CIE-LAB	lab(32.35, 40.31, -68.63)
CIE-LCH	lch(32.35, 79.59, 300.43°)
OKLab	oklab(43.34% 0.0049 -0.1985)
OKLCH	oklch(43.34% 0.199 271.4)
XYZ	xyz(11.6986, 7.2411, 47.7852)
Luminance	0.0724 (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

#303ABB #BBB130

analogous

#307FBB #303ABB #6B30BB

triadic

#303ABB #BB303A #3ABB30

tetradic

#303ABB #BB307F #BBB130 #30BB6B

square

#303ABB #BB307F #BBB130 #30BB6B

split-complementary

#303ABB #BB6B30 #7FBB30

monochromatic

#171C5A #232B8A #303ABB #555ED3 #868CE0

Accessibility & contrast

On white

8.58

#303ABB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#303ABB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303ABB

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303ABB	#FFFFFF	#000000	##FFFFFF
##303ABB	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0045B9

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303abb;
/* rgb */ color: rgb(48, 58, 187);
/* oklch */ color: oklch(43.3% 0.199 271.4);

Tailwind

colors: {
  custom: {
    50: '#7e71d1',
    500: '#303abb',
    950: '#000000',
  },
}

SCSS

$custom: #303abb;
$custom-light: #7e71d1;
$custom-dark: #000000;

JSON

{
  "hex": "#303abb",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 187
  },
  "hsl": {
    "h": 235.683,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.43336,
    "c": 0.19861,
    "h": 271.4
  },
  "luminance": 0.07242
}

Semantic roles & 50–950 ramp

primary

#303ABB

secondary

#C9C47D

accent

#D745E2

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0B0714

muted

#7C7A83

Preview Lab

Preview with #303ABB

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

Preview Lab → · Contrast checker → · Palette generator →