#303CBA#303CBA

#303CBA is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.195 H 271.1°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#303CBA
RGB	rgb(48, 60, 186)
HSL	hsl(235, 59%, 46%)
HSV	hsv(235, 74%, 73%)
CMYK	cmyk(74.2%, 67.7%, 0%, 27.1%)
CIE-LAB	lab(32.71, 38.73, -67.44)
CIE-LCH	lch(32.71, 77.77, 299.87°)
OKLab	oklab(43.57% 0.0039 -0.1951)
OKLCH	oklch(43.57% 0.195 271.1)
XYZ	xyz(11.6947, 7.4040, 47.2576)
Luminance	0.0741 (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

#303CBA #BAAE30

analogous

#3081BA #303CBA #6930BA

triadic

#303CBA #BA303C #3CBA30

tetradic

#303CBA #BA3081 #BAAE30 #30BA69

square

#303CBA #BA3081 #BAAE30 #30BA69

split-complementary

#303CBA #BA6930 #81BA30

monochromatic

#171D59 #232C89 #303CBA #545FD3 #858DDF

Accessibility & contrast

On white

8.46

#303CBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#303CBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303CBA

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303CBA	#FFFFFF	#000000	##FFFFFF
##303CBA	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BE

Deuteranopia (green-blind)

#0046B8

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #303cba;
/* rgb */ color: rgb(48, 60, 186);
/* oklch */ color: oklch(43.6% 0.195 271.1);

Tailwind

colors: {
  custom: {
    50: '#7d72d0',
    500: '#303cba',
    950: '#000000',
  },
}

SCSS

$custom: #303cba;
$custom-light: #7d72d0;
$custom-dark: #000000;

JSON

{
  "hex": "#303cba",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 186
  },
  "hsl": {
    "h": 234.783,
    "s": 58.974,
    "l": 45.882
  },
  "oklch": {
    "l": 0.43568,
    "c": 0.19514,
    "h": 271.1
  },
  "luminance": 0.07405
}

Semantic roles & 50–950 ramp

primary

#303CBA

secondary

#C9C27D

accent

#D546E2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #303CBA

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

Preview Lab → · Contrast checker → · Palette generator →