#3F33BF#3F33BF

#3F33BF is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.6% C 0.207 H 277.3°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#3F33BF
RGB	rgb(63, 51, 191)
HSL	hsl(245, 58%, 47%)
HSV	hsv(245, 73%, 75%)
CMYK	cmyk(67%, 73.3%, 0%, 25.1%)
CIE-LAB	lab(32.22, 47.32, -71.16)
CIE-LCH	lch(32.22, 85.45, 303.62°)
OKLab	oklab(43.61% 0.0262 -0.2055)
OKLCH	oklch(43.61% 0.207 277.3)
XYZ	xyz(12.6346, 7.1849, 50.0011)
Luminance	0.0719 (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

#3F33BF #B3BF33

analogous

#336DBF #3F33BF #8533BF

triadic

#3F33BF #BF3F33 #33BF3F

tetradic

#3F33BF #BF336D #B3BF33 #33BF85

square

#3F33BF #BF336D #B3BF33 #33BF85

split-complementary

#3F33BF #BF8533 #6DBF33

monochromatic

#1F195E #2F268F #3F33BF #665CD3 #938CE0

Accessibility & contrast

On white

8.62

#3F33BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3F33BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33BF

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33BF	#FFFFFF	#000000	##FFFFFF
##3F33BF	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C3

Deuteranopia (green-blind)

#0046BC

Tritanopia (blue-blind)

#005B76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f33bf;
/* rgb */ color: rgb(63, 51, 191);
/* oklch */ color: oklch(43.6% 0.207 277.3);

Tailwind

colors: {
  custom: {
    50: '#856dd4',
    500: '#3f33bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f33bf;
$custom-light: #856dd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33bf",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 191
  },
  "hsl": {
    "h": 245.143,
    "s": 57.851,
    "l": 47.451
  },
  "oklch": {
    "l": 0.43615,
    "c": 0.20721,
    "h": 277.3
  },
  "luminance": 0.07186
}

Semantic roles & 50–950 ramp

primary

#3F33BF

secondary

#C4CB83

accent

#E147D4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0714

muted

#7D7A83

Preview Lab

Preview with #3F33BF

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

Preview Lab → · Contrast checker → · Palette generator →