#3F33C1#3F33C1

#3F33C1 is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.8% C 0.210 H 277.1°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#3F33C1
RGB	rgb(63, 51, 193)
HSL	hsl(245, 58%, 48%)
HSV	hsv(245, 74%, 76%)
CMYK	cmyk(67.4%, 73.6%, 0%, 24.3%)
CIE-LAB	lab(32.42, 47.95, -72.01)
CIE-LCH	lch(32.42, 86.51, 303.66°)
OKLab	oklab(43.81% 0.0258 -0.208)
OKLCH	oklch(43.81% 0.21 277.1)
XYZ	xyz(12.8562, 7.2735, 51.1682)
Luminance	0.0727 (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

#3F33C1 #B5C133

analogous

#336EC1 #3F33C1 #8633C1

triadic

#3F33C1 #C13F33 #33C13F

tetradic

#3F33C1 #C1336E #B5C133 #33C186

square

#3F33C1 #C1336E #B5C133 #33C186

split-complementary

#3F33C1 #C18633 #6EC133

monochromatic

#1F1960 #2F2691 #3F33C1 #675DD4 #948DE1

Accessibility & contrast

On white

8.55

#3F33C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3F33C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33C1

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33C1	#FFFFFF	#000000	##FFFFFF
##3F33C1	1.00	8.55	2.45	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C5

Deuteranopia (green-blind)

#0046BE

Tritanopia (blue-blind)

#005B77

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f33c1;
/* rgb */ color: rgb(63, 51, 193);
/* oklch */ color: oklch(43.8% 0.210 277.1);

Tailwind

colors: {
  custom: {
    50: '#866dd5',
    500: '#3f33c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f33c1;
$custom-light: #866dd5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33c1",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 193
  },
  "hsl": {
    "h": 245.07,
    "s": 58.197,
    "l": 47.843
  },
  "oklch": {
    "l": 0.43814,
    "c": 0.20962,
    "h": 277.1
  },
  "luminance": 0.07275
}

Semantic roles & 50–950 ramp

primary

#3F33C1

secondary

#C5CB84

accent

#E146D4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0714

muted

#7D7A83

Preview Lab

Preview with #3F33C1

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

Preview Lab → · Contrast checker → · Palette generator →