#3F33BE#3F33BE

#3F33BE is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.5% C 0.206 H 277.4°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F33BE
RGB	rgb(63, 51, 190)
HSL	hsl(245, 58%, 47%)
HSV	hsv(245, 73%, 75%)
CMYK	cmyk(66.8%, 73.2%, 0%, 25.5%)
CIE-LAB	lab(32.13, 47.00, -70.73)
CIE-LCH	lch(32.13, 84.92, 303.60°)
OKLab	oklab(43.52% 0.0264 -0.2043)
OKLCH	oklch(43.52% 0.206 277.4)
XYZ	xyz(12.5250, 7.1410, 49.4235)
Luminance	0.0714 (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

#3F33BE #B2BE33

analogous

#336CBE #3F33BE #8533BE

triadic

#3F33BE #BE3F33 #33BE3F

tetradic

#3F33BE #BE336C #B2BE33 #33BE85

square

#3F33BE #BE336C #B2BE33 #33BE85

split-complementary

#3F33BE #BE8533 #6CBE33

monochromatic

#1F195E #2F268E #3F33BE #665BD3 #938BE0

Accessibility & contrast

On white

8.65

#3F33BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#3F33BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33BE

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33BE	#FFFFFF	#000000	##FFFFFF
##3F33BE	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C2

Deuteranopia (green-blind)

#0046BB

Tritanopia (blue-blind)

#005A76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f33be;
/* rgb */ color: rgb(63, 51, 190);
/* oklch */ color: oklch(43.5% 0.206 277.4);

Tailwind

colors: {
  custom: {
    50: '#856dd3',
    500: '#3f33be',
    950: '#000000',
  },
}

SCSS

$custom: #3f33be;
$custom-light: #856dd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33be",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 190
  },
  "hsl": {
    "h": 245.18,
    "s": 57.676,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43516,
    "c": 0.20601,
    "h": 277.4
  },
  "luminance": 0.07142
}

Semantic roles & 50–950 ramp

primary

#3F33BE

secondary

#C4CA83

accent

#E147D4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3F33BE

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

Preview Lab → · Contrast checker → · Palette generator →