#3F29B0#3F29B0

#3F29B0 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.8% C 0.199 H 280.3°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F29B0
RGB	rgb(63, 41, 176)
HSL	hsl(250, 62%, 43%)
HSV	hsv(250, 77%, 69%)
CMYK	cmyk(64.2%, 76.7%, 0%, 31%)
CIE-LAB	lab(28.84, 47.97, -67.83)
CIE-LCH	lch(28.84, 83.08, 305.27°)
OKLab	oklab(40.78% 0.0357 -0.1958)
OKLCH	oklch(40.78% 0.199 280.3)
XYZ	xyz(10.6768, 5.7764, 41.6182)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.96

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F29B0 #9AB029

analogous

#2956B0 #3F29B0 #8329B0

triadic

#3F29B0 #B03F29 #29B03F

tetradic

#3F29B0 #B02956 #9AB029 #29B083

square

#3F29B0 #B02956 #9AB029 #29B083

split-complementary

#3F29B0 #B08329 #56B029

monochromatic

#1B124D #2D1D7E #3F29B0 #5A43D3 #8675DF

Accessibility & contrast

On white

9.74

#3F29B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#3F29B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F29B0

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F29B0	#FFFFFF	#000000	##FFFFFF
##3F29B0	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B4

Deuteranopia (green-blind)

#003FAE

Tritanopia (blue-blind)

#00506B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3f29b0;
/* rgb */ color: rgb(63, 41, 176);
/* oklch */ color: oklch(40.8% 0.199 280.3);

Tailwind

colors: {
  custom: {
    50: '#8366c9',
    500: '#3f29b0',
    950: '#000000',
  },
}

SCSS

$custom: #3f29b0;
$custom-light: #8366c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f29b0",
  "rgb": {
    "r": 63,
    "g": 41,
    "b": 176
  },
  "hsl": {
    "h": 249.778,
    "s": 62.212,
    "l": 42.549
  },
  "oklch": {
    "l": 0.40777,
    "c": 0.199,
    "h": 280.3
  },
  "luminance": 0.05777
}

Semantic roles & 50–950 ramp

primary

#3F29B0

secondary

#B8C66F

accent

#E543CB

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3F29B0

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

Preview Lab → · Contrast checker → · Palette generator →