#3F28B9#3F28B9

#3F28B9 is a dark, highly saturated blue. Relative luminance 0.061; OKLCH L 41.6% C 0.210 H 279.3°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F28B9
RGB	rgb(63, 40, 185)
HSL	hsl(250, 64%, 44%)
HSV	hsv(250, 78%, 73%)
CMYK	cmyk(65.9%, 78.4%, 0%, 27.5%)
CIE-LAB	lab(29.60, 51.18, -71.93)
CIE-LCH	lch(29.60, 88.28, 305.43°)
OKLab	oklab(41.59% 0.0338 -0.2077)
OKLCH	oklch(41.59% 0.21 279.3)
XYZ	xyz(11.5628, 6.0762, 46.4530)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F28B9 #A2B928

analogous

#285AB9 #3F28B9 #8828B9

triadic

#3F28B9 #B93F28 #28B93F

tetradic

#3F28B9 #B9285A #A2B928 #28B988

square

#3F28B9 #B9285A #A2B928 #28B988

split-complementary

#3F28B9 #B98828 #5AB928

monochromatic

#1D1254 #2E1D87 #3F28B9 #5E47D7 #8A79E2

Accessibility & contrast

On white

9.48

#3F28B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3F28B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F28B9

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F28B9	#FFFFFF	#000000	##FFFFFF
##3F28B9	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BBD

Deuteranopia (green-blind)

#0040B6

Tritanopia (blue-blind)

#005370

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f28b9;
/* rgb */ color: rgb(63, 40, 185);
/* oklch */ color: oklch(41.6% 0.210 279.3);

Tailwind

colors: {
  custom: {
    50: '#8566cf',
    500: '#3f28b9',
    950: '#000000',
  },
}

SCSS

$custom: #3f28b9;
$custom-light: #8566cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f28b9",
  "rgb": {
    "r": 63,
    "g": 40,
    "b": 185
  },
  "hsl": {
    "h": 249.517,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.41589,
    "c": 0.21046,
    "h": 279.3
  },
  "luminance": 0.06077
}

Semantic roles & 50–950 ramp

primary

#3F28B9

secondary

#BCCA73

accent

#E740CD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0D0614

muted

#7D7A82

Preview Lab

Preview with #3F28B9

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

Preview Lab → · Contrast checker → · Palette generator →