#3F33DB#3F33DB

#3F33DB is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 46.5% C 0.240 H 274.8°. Best body text is #FFFFFF at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F33DB
RGB	rgb(63, 51, 219)
HSL	hsl(244, 70%, 53%)
HSV	hsv(244, 77%, 86%)
CMYK	cmyk(71.2%, 76.7%, 0%, 14.1%)
CIE-LAB	lab(35.08, 56.00, -82.73)
CIE-LCH	lch(35.08, 99.90, 304.10°)
OKLab	oklab(46.48% 0.0202 -0.2392)
OKLCH	oklch(46.48% 0.24 274.8)
XYZ	xyz(16.0157, 8.5373, 67.8079)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.97

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F33DB #CFDB33

analogous

#337BDB #3F33DB #9333DB

triadic

#3F33DB #DB3F33 #33DB3F

tetradic

#3F33DB #DB337B #CFDB33 #33DB93

square

#3F33DB #DB337B #CFDB33 #33DB93

split-complementary

#3F33DB #DB9333 #7BDB33

monochromatic

#1E167D #2A1FB1 #3F33DB #7067E4 #A19BED

Accessibility & contrast

On white

7.76

#3F33DB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3F33DB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33DB

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33DB	#FFFFFF	#000000	##FFFFFF
##3F33DB	1.00	7.76	2.71	7.76
#FFFFFF	7.76	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AE0

Deuteranopia (green-blind)

#004BD8

Tritanopia (blue-blind)

#006586

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f33db;
/* rgb */ color: rgb(63, 51, 219);
/* oklch */ color: oklch(46.5% 0.240 274.8);

Tailwind

colors: {
  custom: {
    50: '#8b6ee8',
    500: '#3f33db',
    950: '#000000',
  },
}

SCSS

$custom: #3f33db;
$custom-light: #8b6ee8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33db",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 219
  },
  "hsl": {
    "h": 244.286,
    "s": 70,
    "l": 52.941
  },
  "oklch": {
    "l": 0.46475,
    "c": 0.2401,
    "h": 274.8
  },
  "luminance": 0.08539
}

Semantic roles & 50–950 ramp

primary

#3F33DB

secondary

#D4D991

accent

#ED3BE0

background

#F9F6FE

surface

#F2ECFD

border

#CCC7D5

text

#0E0716

muted

#7E7A84

Preview Lab

Preview with #3F33DB

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

Preview Lab → · Contrast checker → · Palette generator →