#3F29B2#3F29B2

#3F29B2 is a dark, highly saturated blue. Relative luminance 0.059; OKLCH L 41.0% C 0.201 H 280.0°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F29B2
RGB	rgb(63, 41, 178)
HSL	hsl(250, 63%, 43%)
HSV	hsv(250, 77%, 70%)
CMYK	cmyk(64.6%, 77%, 0%, 30.2%)
CIE-LAB	lab(29.05, 48.58, -68.69)
CIE-LCH	lch(29.05, 84.13, 305.27°)
OKLab	oklab(40.98% 0.0351 -0.1983)
OKLCH	oklch(40.98% 0.201 280)
XYZ	xyz(10.8762, 5.8561, 42.6680)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.80

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F29B2 #9CB229

analogous

#2957B2 #3F29B2 #8329B2

triadic

#3F29B2 #B23F29 #29B23F

tetradic

#3F29B2 #B22957 #9CB229 #29B283

square

#3F29B2 #B22957 #9CB229 #29B283

split-complementary

#3F29B2 #B28329 #57B229

monochromatic

#1C124F #2D1E80 #3F29B2 #5B44D4 #8776DF

Accessibility & contrast

On white

9.67

#3F29B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#3F29B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F29B2

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F29B2	#FFFFFF	#000000	##FFFFFF
##3F29B2	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B6

Deuteranopia (green-blind)

#003FB0

Tritanopia (blue-blind)

#00516C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3f29b2;
/* rgb */ color: rgb(63, 41, 178);
/* oklch */ color: oklch(41.0% 0.201 280.0);

Tailwind

colors: {
  custom: {
    50: '#8366ca',
    500: '#3f29b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f29b2;
$custom-light: #8366ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f29b2",
  "rgb": {
    "r": 63,
    "g": 41,
    "b": 178
  },
  "hsl": {
    "h": 249.635,
    "s": 62.557,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40982,
    "c": 0.20137,
    "h": 280
  },
  "luminance": 0.05857
}

Semantic roles & 50–950 ramp

primary

#3F29B2

secondary

#B9C770

accent

#E642CB

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #3F29B2

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

Preview Lab → · Contrast checker → · Palette generator →