#3F28BA#3F28BA

#3F28BA is a dark, highly saturated blue. Relative luminance 0.061; OKLCH L 41.7% C 0.212 H 279.1°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#3F28BA
RGB	rgb(63, 40, 186)
HSL	hsl(249, 65%, 44%)
HSV	hsv(249, 78%, 73%)
CMYK	cmyk(66.1%, 78.5%, 0%, 27.1%)
CIE-LAB	lab(29.71, 51.48, -72.35)
CIE-LCH	lch(29.71, 88.80, 305.43°)
OKLab	oklab(41.69% 0.0336 -0.2089)
OKLCH	oklch(41.69% 0.212 279.1)
XYZ	xyz(11.6688, 6.1185, 47.0109)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F28BA #A3BA28

analogous

#285ABA #3F28BA #8828BA

triadic

#3F28BA #BA3F28 #28BA3F

tetradic

#3F28BA #BA285A #A3BA28 #28BA88

square

#3F28BA #BA285A #A3BA28 #28BA88

split-complementary

#3F28BA #BA8828 #5ABA28

monochromatic

#1D1255 #2E1D88 #3F28BA #5E48D8 #8A7AE2

Accessibility & contrast

On white

9.44

#3F28BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3F28BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F28BA

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F28BA	#FFFFFF	#000000	##FFFFFF
##3F28BA	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BBE

Deuteranopia (green-blind)

#0040B7

Tritanopia (blue-blind)

#005471

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f28ba;
/* rgb */ color: rgb(63, 40, 186);
/* oklch */ color: oklch(41.7% 0.212 279.1);

Tailwind

colors: {
  custom: {
    50: '#8566d0',
    500: '#3f28ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f28ba;
$custom-light: #8566d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f28ba",
  "rgb": {
    "r": 63,
    "g": 40,
    "b": 186
  },
  "hsl": {
    "h": 249.452,
    "s": 64.602,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41694,
    "c": 0.21162,
    "h": 279.1
  },
  "luminance": 0.0612
}

Semantic roles & 50–950 ramp

primary

#3F28BA

secondary

#BDCA73

accent

#E840CD

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0D0614

muted

#7D7A83

Preview Lab

Preview with #3F28BA

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

Preview Lab → · Contrast checker → · Palette generator →