#3633CB#3633CB

#3633CB is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.3% C 0.224 H 273.2°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#3633CB
RGB	rgb(54, 51, 203)
HSL	hsl(241, 60%, 50%)
HSV	hsv(241, 75%, 80%)
CMYK	cmyk(73.4%, 74.9%, 0%, 20.4%)
CIE-LAB	lab(32.84, 50.25, -77.19)
CIE-LCH	lch(32.84, 92.11, 303.06°)
OKLab	oklab(44.25% 0.0126 -0.2233)
OKLCH	oklch(44.25% 0.224 273.2)
XYZ	xyz(13.4810, 7.4623, 57.2182)
Luminance	0.0746 (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

#3633CB #C8CB33

analogous

#337CCB #3633CB #8233CB

triadic

#3633CB #CB3633 #33CB36

tetradic

#3633CB #CB337C #C8CB33 #33CB82

square

#3633CB #CB337C #C8CB33 #33CB82

split-complementary

#3633CB #CB8233 #7CCB33

monochromatic

#1C1A69 #29279A #3633CB #6663D8 #9694E4

Accessibility & contrast

On white

8.42

#3633CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3633CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3633CB

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3633CB	#FFFFFF	#000000	##FFFFFF
##3633CB	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054CF

Deuteranopia (green-blind)

#0046C8

Tritanopia (blue-blind)

#00607D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3633cb;
/* rgb */ color: rgb(54, 51, 203);
/* oklch */ color: oklch(44.3% 0.224 273.2);

Tailwind

colors: {
  custom: {
    50: '#846ddc',
    500: '#3633cb',
    950: '#000000',
  },
}

SCSS

$custom: #3633cb;
$custom-light: #846ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#3633cb",
  "rgb": {
    "r": 54,
    "g": 51,
    "b": 203
  },
  "hsl": {
    "h": 241.184,
    "s": 59.843,
    "l": 49.804
  },
  "oklch": {
    "l": 0.44254,
    "c": 0.22371,
    "h": 273.2
  },
  "luminance": 0.07464
}

Semantic roles & 50–950 ramp

primary

#3633CB

secondary

#CECF8B

accent

#E345E0

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3633CB

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

Preview Lab → · Contrast checker → · Palette generator →