#3F33BD#3F33BD

#3F33BD is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.4% C 0.205 H 277.5°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F33BD
RGB	rgb(63, 51, 189)
HSL	hsl(245, 58%, 47%)
HSV	hsv(245, 73%, 74%)
CMYK	cmyk(66.7%, 73%, 0%, 25.9%)
CIE-LAB	lab(32.03, 46.68, -70.30)
CIE-LCH	lch(32.03, 84.39, 303.59°)
OKLab	oklab(43.42% 0.0266 -0.2031)
OKLCH	oklch(43.42% 0.205 277.5)
XYZ	xyz(12.4161, 7.0975, 48.8499)
Luminance	0.0710 (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

#3F33BD #B1BD33

analogous

#336CBD #3F33BD #8433BD

triadic

#3F33BD #BD3F33 #33BD3F

tetradic

#3F33BD #BD336C #B1BD33 #33BD84

square

#3F33BD #BD336C #B1BD33 #33BD84

split-complementary

#3F33BD #BD8433 #6CBD33

monochromatic

#1F195D #2F268D #3F33BD #655BD3 #928BE0

Accessibility & contrast

On white

8.68

#3F33BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3F33BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33BD

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33BD	#FFFFFF	#000000	##FFFFFF
##3F33BD	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C1

Deuteranopia (green-blind)

#0045BA

Tritanopia (blue-blind)

#005A75

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f33bd;
/* rgb */ color: rgb(63, 51, 189);
/* oklch */ color: oklch(43.4% 0.205 277.5);

Tailwind

colors: {
  custom: {
    50: '#856dd2',
    500: '#3f33bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f33bd;
$custom-light: #856dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33bd",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 189
  },
  "hsl": {
    "h": 245.217,
    "s": 57.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43416,
    "c": 0.20479,
    "h": 277.5
  },
  "luminance": 0.07099
}

Semantic roles & 50–950 ramp

primary

#3F33BD

secondary

#C4CA82

accent

#E147D3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3F33BD

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

Preview Lab → · Contrast checker → · Palette generator →