#3F29B9#3F29B9

#3F29B9 is a dark, highly saturated blue. Relative luminance 0.061; OKLCH L 41.7% C 0.210 H 279.1°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#3F29B9
RGB	rgb(63, 41, 185)
HSL	hsl(249, 64%, 44%)
HSV	hsv(249, 78%, 73%)
CMYK	cmyk(65.9%, 77.8%, 0%, 27.5%)
CIE-LAB	lab(29.77, 50.69, -71.65)
CIE-LCH	lch(29.77, 87.77, 305.28°)
OKLab	oklab(41.71% 0.0333 -0.2069)
OKLCH	oklch(41.71% 0.21 279.1)
XYZ	xyz(11.5970, 6.1445, 46.4644)
Luminance	0.0614 (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

#3F29B9 #A3B929

analogous

#295BB9 #3F29B9 #8729B9

triadic

#3F29B9 #B93F29 #29B93F

tetradic

#3F29B9 #B9295B #A3B929 #29B987

square

#3F29B9 #B9295B #A3B929 #29B987

split-complementary

#3F29B9 #B98729 #5BB929

monochromatic

#1D1355 #2E1E87 #3F29B9 #5E49D7 #8A7BE2

Accessibility & contrast

On white

9.42

#3F29B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#3F29B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F29B9

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F29B9	#FFFFFF	#000000	##FFFFFF
##3F29B9	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BBD

Deuteranopia (green-blind)

#0040B6

Tritanopia (blue-blind)

#005470

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f29b9;
/* rgb */ color: rgb(63, 41, 185);
/* oklch */ color: oklch(41.7% 0.210 279.1);

Tailwind

colors: {
  custom: {
    50: '#8567cf',
    500: '#3f29b9',
    950: '#000000',
  },
}

SCSS

$custom: #3f29b9;
$custom-light: #8567cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f29b9",
  "rgb": {
    "r": 63,
    "g": 41,
    "b": 185
  },
  "hsl": {
    "h": 249.167,
    "s": 63.717,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41708,
    "c": 0.20957,
    "h": 279.1
  },
  "luminance": 0.06145
}

Semantic roles & 50–950 ramp

primary

#3F29B9

secondary

#BDCA74

accent

#E741CD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3F29B9

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

Preview Lab → · Contrast checker → · Palette generator →