#3F29C5#3F29C5

#3F29C5 is a dark, highly saturated blue. Relative luminance 0.067; OKLCH L 43.0% C 0.223 H 277.7°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F29C5
RGB	rgb(63, 41, 197)
HSL	hsl(248, 66%, 47%)
HSV	hsv(248, 79%, 77%)
CMYK	cmyk(68%, 79.2%, 0%, 22.7%)
CIE-LAB	lab(31.05, 54.27, -76.62)
CIE-LCH	lch(31.05, 93.89, 305.31°)
OKLab	oklab(42.97% 0.0301 -0.2214)
OKLCH	oklch(42.97% 0.223 277.7)
XYZ	xyz(12.9176, 6.6727, 53.4197)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 4.71

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F29C5 #AFC529

analogous

#2961C5 #3F29C5 #8D29C5

triadic

#3F29C5 #C53F29 #29C53F

tetradic

#3F29C5 #C52961 #AFC529 #29C58D

square

#3F29C5 #C52961 #AFC529 #29C58D

split-complementary

#3F29C5 #C58D29 #61C529

monochromatic

#1F1460 #2F1E92 #3F29C5 #6451DB #9183E5

Accessibility & contrast

On white

8.99

#3F29C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#3F29C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F29C5

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F29C5	#FFFFFF	#000000	##FFFFFF
##3F29C5	1.00	8.99	2.33	8.99
#FFFFFF	8.99	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	8.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FC9

Deuteranopia (green-blind)

#0043C2

Tritanopia (blue-blind)

#005977

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3f29c5;
/* rgb */ color: rgb(63, 41, 197);
/* oklch */ color: oklch(43.0% 0.223 277.7);

Tailwind

colors: {
  custom: {
    50: '#8767d8',
    500: '#3f29c5',
    950: '#000000',
  },
}

SCSS

$custom: #3f29c5;
$custom-light: #8767d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f29c5",
  "rgb": {
    "r": 63,
    "g": 41,
    "b": 197
  },
  "hsl": {
    "h": 248.462,
    "s": 65.546,
    "l": 46.667
  },
  "oklch": {
    "l": 0.42974,
    "c": 0.2234,
    "h": 277.7
  },
  "luminance": 0.06674
}

Semantic roles & 50–950 ramp

primary

#3F29C5

secondary

#C3CE7C

accent

#E83FD1

background

#F9F6FD

surface

#F1EBFB

border

#CBC6D4

text

#0D0615

muted

#7E7A83

Preview Lab

Preview with #3F29C5

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

Preview Lab → · Contrast checker → · Palette generator →