#303DA0#303DA0

#303DA0 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.160 H 271.7°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#303DA0
RGB	rgb(48, 61, 160)
HSL	hsl(233, 54%, 41%)
HSV	hsv(233, 70%, 63%)
CMYK	cmyk(70%, 61.9%, 0%, 37.3%)
CIE-LAB	lab(30.65, 28.76, -55.29)
CIE-LCH	lch(30.65, 62.32, 297.48°)
OKLab	oklab(41.35% 0.0048 -0.1595)
OKLCH	oklch(41.35% 0.16 271.7)
XYZ	xyz(9.2307, 6.5030, 34.0196)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303DA0 #A09330

analogous

#3075A0 #303DA0 #5B30A0

triadic

#303DA0 #A0303D #3DA030

tetradic

#303DA0 #A03075 #A09330 #30A05B

square

#303DA0 #A03075 #A09330 #30A05B

split-complementary

#303DA0 #A05B30 #75A030

monochromatic

#141942 #222B71 #303DA0 #4655C7 #7580D6

Accessibility & contrast

On white

9.13

#303DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#303DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DA0

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DA0	#FFFFFF	#000000	##FFFFFF
##303DA0	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA3

Deuteranopia (green-blind)

#00439E

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #303da0;
/* rgb */ color: rgb(48, 61, 160);
/* oklch */ color: oklch(41.3% 0.160 271.7);

Tailwind

colors: {
  custom: {
    50: '#7772bd',
    500: '#303da0',
    950: '#000000',
  },
}

SCSS

$custom: #303da0;
$custom-light: #7772bd;
$custom-dark: #000000;

JSON

{
  "hex": "#303da0",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 160
  },
  "hsl": {
    "h": 233.036,
    "s": 53.846,
    "l": 40.784
  },
  "oklch": {
    "l": 0.4135,
    "c": 0.15955,
    "h": 271.7
  },
  "luminance": 0.06504
}

Semantic roles & 50–950 ramp

primary

#303DA0

secondary

#BEB46E

accent

#CC4BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303DA0

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

Preview Lab → · Contrast checker → · Palette generator →