#3633BD#3633BD

#3633BD is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.8% C 0.207 H 274.2°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#3633BD
RGB	rgb(54, 51, 189)
HSL	hsl(241, 58%, 47%)
HSV	hsv(241, 73%, 74%)
CMYK	cmyk(71.4%, 73%, 0%, 25.9%)
CIE-LAB	lab(31.40, 45.71, -71.35)
CIE-LCH	lch(31.40, 84.74, 302.65°)
OKLab	oklab(42.81% 0.0152 -0.2063)
OKLCH	oklch(42.81% 0.207 274.2)
XYZ	xyz(11.8874, 6.8249, 48.8251)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.00

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3633BD #BABD33

analogous

#3375BD #3633BD #7B33BD

triadic

#3633BD #BD3633 #33BD36

tetradic

#3633BD #BD3375 #BABD33 #33BD7B

square

#3633BD #BD3375 #BABD33 #33BD7B

split-complementary

#3633BD #BD7B33 #75BD33

monochromatic

#1A195D #28268D #3633BD #5D5BD3 #8D8BE0

Accessibility & contrast

On white

8.88

#3633BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3633BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3633BD

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3633BD	#FFFFFF	#000000	##FFFFFF
##3633BD	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C1

Deuteranopia (green-blind)

#0043BB

Tritanopia (blue-blind)

#005A75

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3633bd;
/* rgb */ color: rgb(54, 51, 189);
/* oklch */ color: oklch(42.8% 0.207 274.2);

Tailwind

colors: {
  custom: {
    50: '#816cd2',
    500: '#3633bd',
    950: '#000000',
  },
}

SCSS

$custom: #3633bd;
$custom-light: #816cd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3633bd",
  "rgb": {
    "r": 54,
    "g": 51,
    "b": 189
  },
  "hsl": {
    "h": 241.304,
    "s": 57.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.42812,
    "c": 0.2069,
    "h": 274.2
  },
  "luminance": 0.06826
}

Semantic roles & 50–950 ramp

primary

#3633BD

secondary

#C8CA82

accent

#E147DD

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3633BD

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

Preview Lab → · Contrast checker → · Palette generator →