#303B84#303B84

#303B84 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.122 H 272.9°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#303B84
RGB	rgb(48, 59, 132)
HSL	hsl(232, 47%, 35%)
HSV	hsv(232, 64%, 52%)
CMYK	cmyk(63.6%, 55.3%, 0%, 48.2%)
CIE-LAB	lab(27.90, 19.81, -42.56)
CIE-LCH	lch(27.90, 46.94, 294.96°)
OKLab	oklab(38.61% 0.0061 -0.1221)
OKLCH	oklch(38.61% 0.122 272.9)
XYZ	xyz(6.9464, 5.4217, 22.5058)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303B84 #847930

analogous

#306584 #303B84 #4F3084

triadic

#303B84 #84303B #3B8430

tetradic

#303B84 #843065 #847930 #30844F

square

#303B84 #843065 #847930 #30844F

split-complementary

#303B84 #844F30 #658430

monochromatic

#0F132A #202757 #303B84 #404FB1 #6773C8

Accessibility & contrast

On white

10.07

#303B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#303B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303B84

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303B84	#FFFFFF	#000000	##FFFFFF
##303B84	1.00	10.07	2.08	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B4687

Deuteranopia (green-blind)

#003E82

Tritanopia (blue-blind)

#004C59

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #303b84;
/* rgb */ color: rgb(48, 59, 132);
/* oklch */ color: oklch(38.6% 0.122 272.9);

Tailwind

colors: {
  custom: {
    50: '#7170a8',
    500: '#303b84',
    950: '#000000',
  },
}

SCSS

$custom: #303b84;
$custom-light: #7170a8;
$custom-dark: #000000;

JSON

{
  "hex": "#303b84",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 132
  },
  "hsl": {
    "h": 232.143,
    "s": 46.667,
    "l": 35.294
  },
  "oklch": {
    "l": 0.3861,
    "c": 0.12223,
    "h": 272.9
  },
  "luminance": 0.05422
}

Semantic roles & 50–950 ramp

primary

#303B84

secondary

#AFA561

accent

#C551D6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #303B84

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

Preview Lab → · Contrast checker → · Palette generator →