#3633BC#3633BC

#3633BC is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.7% C 0.206 H 274.3°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#3633BC
RGB	rgb(54, 51, 188)
HSL	hsl(241, 57%, 47%)
HSV	hsv(241, 73%, 74%)
CMYK	cmyk(71.3%, 72.9%, 0%, 26.3%)
CIE-LAB	lab(31.30, 45.39, -70.92)
CIE-LCH	lch(31.30, 84.20, 302.62°)
OKLab	oklab(42.71% 0.0154 -0.2051)
OKLCH	oklch(42.71% 0.206 274.3)
XYZ	xyz(11.7792, 6.7816, 48.2554)
Luminance	0.0678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.91

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3633BC #B9BC33

analogous

#3375BC #3633BC #7B33BC

triadic

#3633BC #BC3633 #33BC36

tetradic

#3633BC #BC3375 #B9BC33 #33BC7B

square

#3633BC #BC3375 #B9BC33 #33BC7B

split-complementary

#3633BC #BC7B33 #75BC33

monochromatic

#1A195C #28268C #3633BC #5D5AD2 #8C8ADF

Accessibility & contrast

On white

8.91

#3633BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3633BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3633BC

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3633BC	#FFFFFF	#000000	##FFFFFF
##3633BC	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C0

Deuteranopia (green-blind)

#0043BA

Tritanopia (blue-blind)

#005A74

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3633bc;
/* rgb */ color: rgb(54, 51, 188);
/* oklch */ color: oklch(42.7% 0.206 274.3);

Tailwind

colors: {
  custom: {
    50: '#816cd1',
    500: '#3633bc',
    950: '#000000',
  },
}

SCSS

$custom: #3633bc;
$custom-light: #816cd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3633bc",
  "rgb": {
    "r": 54,
    "g": 51,
    "b": 188
  },
  "hsl": {
    "h": 241.314,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4271,
    "c": 0.20569,
    "h": 274.3
  },
  "luminance": 0.06783
}

Semantic roles & 50–950 ramp

primary

#3633BC

secondary

#C8C981

accent

#E147DD

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3633BC

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

Preview Lab → · Contrast checker → · Palette generator →