#3633B3#3633B3

#3633B3 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.8% C 0.195 H 275.0°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#3633B3
RGB	rgb(54, 51, 179)
HSL	hsl(241, 56%, 45%)
HSV	hsv(241, 72%, 70%)
CMYK	cmyk(69.8%, 71.5%, 0%, 29.8%)
CIE-LAB	lab(30.41, 42.41, -67.06)
CIE-LCH	lch(30.41, 79.34, 302.31°)
OKLab	oklab(41.81% 0.0169 -0.1938)
OKLCH	oklch(41.81% 0.195 275)
XYZ	xyz(10.8391, 6.4056, 43.3043)
Luminance	0.0641 (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

#3633B3 #B0B333

analogous

#3370B3 #3633B3 #7633B3

triadic

#3633B3 #B33633 #33B336

tetradic

#3633B3 #B33370 #B0B333 #33B376

square

#3633B3 #B33370 #B0B333 #33B376

split-complementary

#3633B3 #B37633 #70B333

monochromatic

#191854 #282583 #3633B3 #5855CE #8684DC

Accessibility & contrast

On white

9.20

#3633B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3633B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3633B3

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3633B3	#FFFFFF	#000000	##FFFFFF
##3633B3	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB7

Deuteranopia (green-blind)

#0042B1

Tritanopia (blue-blind)

#00576F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3633b3;
/* rgb */ color: rgb(54, 51, 179);
/* oklch */ color: oklch(41.8% 0.195 275.0);

Tailwind

colors: {
  custom: {
    50: '#7f6ccb',
    500: '#3633b3',
    950: '#000000',
  },
}

SCSS

$custom: #3633b3;
$custom-light: #7f6ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#3633b3",
  "rgb": {
    "r": 54,
    "g": 51,
    "b": 179
  },
  "hsl": {
    "h": 241.406,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.41806,
    "c": 0.19456,
    "h": 275
  },
  "luminance": 0.06407
}

Semantic roles & 50–950 ramp

primary

#3633B3

secondary

#C4C67C

accent

#DF49DB

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3633B3

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

Preview Lab → · Contrast checker → · Palette generator →