#303CB6#303CB6

#303CB6 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.2% C 0.190 H 271.3°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#303CB6
RGB	rgb(48, 60, 182)
HSL	hsl(235, 58%, 45%)
HSV	hsv(235, 74%, 71%)
CMYK	cmyk(73.6%, 67%, 0%, 28.6%)
CIE-LAB	lab(32.34, 37.32, -65.69)
CIE-LCH	lch(32.34, 75.55, 299.60°)
OKLab	oklab(43.19% 0.0042 -0.19)
OKLCH	oklch(43.19% 0.19 271.3)
XYZ	xyz(11.2754, 7.2363, 45.0494)
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

#303CB6 #B6AA30

analogous

#307FB6 #303CB6 #6730B6

triadic

#303CB6 #B6303C #3CB630

tetradic

#303CB6 #B6307F #B6AA30 #30B667

square

#303CB6 #B6307F #B6AA30 #30B667

split-complementary

#303CB6 #B66730 #7FB630

monochromatic

#161C55 #232C86 #303CB6 #525DD1 #828BDE

Accessibility & contrast

On white

8.58

#303CB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#303CB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303CB6

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303CB6	#FFFFFF	#000000	##FFFFFF
##303CB6	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)

#0052BA

Deuteranopia (green-blind)

#0046B4

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303cb6;
/* rgb */ color: rgb(48, 60, 182);
/* oklch */ color: oklch(43.2% 0.190 271.3);

Tailwind

colors: {
  custom: {
    50: '#7c72cd',
    500: '#303cb6',
    950: '#000000',
  },
}

SCSS

$custom: #303cb6;
$custom-light: #7c72cd;
$custom-dark: #000000;

JSON

{
  "hex": "#303cb6",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 182
  },
  "hsl": {
    "h": 234.627,
    "s": 58.261,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43186,
    "c": 0.19001,
    "h": 271.3
  },
  "luminance": 0.07237
}

Semantic roles & 50–950 ramp

primary

#303CB6

secondary

#C7C07B

accent

#D446E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #303CB6

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

Preview Lab → · Contrast checker → · Palette generator →