#303DBD#303DBD

#303DBD is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.0% C 0.198 H 270.9°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#303DBD
RGB	rgb(48, 61, 189)
HSL	hsl(234, 59%, 46%)
HSV	hsv(234, 75%, 74%)
CMYK	cmyk(74.6%, 67.7%, 0%, 25.9%)
CIE-LAB	lab(33.22, 39.17, -68.38)
CIE-LCH	lch(33.22, 78.80, 299.81°)
OKLab	oklab(44.02% 0.003 -0.1978)
OKLCH	oklch(44.02% 0.198 270.9)
XYZ	xyz(12.0698, 7.6387, 48.9726)
Luminance	0.0764 (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

#303DBD #BDB030

analogous

#3084BD #303DBD #6A30BD

triadic

#303DBD #BD303D #3DBD30

tetradic

#303DBD #BD3084 #BDB030 #30BD6A

square

#303DBD #BD3084 #BDB030 #30BD6A

split-complementary

#303DBD #BD6A30 #84BD30

monochromatic

#171D5B #242D8C #303DBD #5662D4 #878FE0

Accessibility & contrast

On white

8.31

#303DBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#303DBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DBD

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DBD	#FFFFFF	#000000	##FFFFFF
##303DBD	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C1

Deuteranopia (green-blind)

#0047BB

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #303dbd;
/* rgb */ color: rgb(48, 61, 189);
/* oklch */ color: oklch(44.0% 0.198 270.9);

Tailwind

colors: {
  custom: {
    50: '#7e73d2',
    500: '#303dbd',
    950: '#000000',
  },
}

SCSS

$custom: #303dbd;
$custom-light: #7e73d2;
$custom-dark: #000000;

JSON

{
  "hex": "#303dbd",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 189
  },
  "hsl": {
    "h": 234.468,
    "s": 59.494,
    "l": 46.471
  },
  "oklch": {
    "l": 0.44023,
    "c": 0.19784,
    "h": 270.9
  },
  "luminance": 0.0764
}

Semantic roles & 50–950 ramp

primary

#303DBD

secondary

#CAC37F

accent

#D445E3

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #303DBD

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

Preview Lab → · Contrast checker → · Palette generator →