#3F27BB#3F27BB

#3F27BB is a dark, highly saturated blue. Relative luminance 0.061; OKLCH L 41.7% C 0.214 H 279.1°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#3F27BB
RGB	rgb(63, 39, 187)
HSL	hsl(250, 65%, 44%)
HSV	hsv(250, 79%, 73%)
CMYK	cmyk(66.3%, 79.1%, 0%, 26.7%)
CIE-LAB	lab(29.65, 52.26, -73.04)
CIE-LCH	lch(29.65, 89.81, 305.58°)
OKLab	oklab(41.68% 0.0338 -0.2109)
OKLCH	oklch(41.68% 0.214 279.1)
XYZ	xyz(11.7422, 6.0947, 47.5617)
Luminance	0.0610 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F27BB #A3BB27

analogous

#2759BB #3F27BB #8927BB

triadic

#3F27BB #BB3F27 #27BB3F

tetradic

#3F27BB #BB2759 #A3BB27 #27BB89

square

#3F27BB #BB2759 #A3BB27 #27BB89

split-complementary

#3F27BB #BB8927 #59BB27

monochromatic

#1D1256 #2E1C88 #3F27BB #5E47D9 #8A79E3

Accessibility & contrast

On white

9.46

#3F27BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3F27BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F27BB

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F27BB	#FFFFFF	#000000	##FFFFFF
##3F27BB	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BBF

Deuteranopia (green-blind)

#0040B8

Tritanopia (blue-blind)

#005471

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f27bb;
/* rgb */ color: rgb(63, 39, 187);
/* oklch */ color: oklch(41.7% 0.214 279.1);

Tailwind

colors: {
  custom: {
    50: '#8566d1',
    500: '#3f27bb',
    950: '#000000',
  },
}

SCSS

$custom: #3f27bb;
$custom-light: #8566d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f27bb",
  "rgb": {
    "r": 63,
    "g": 39,
    "b": 187
  },
  "hsl": {
    "h": 249.73,
    "s": 65.487,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41684,
    "c": 0.21363,
    "h": 279.1
  },
  "luminance": 0.06096
}

Semantic roles & 50–950 ramp

primary

#3F27BB

secondary

#BDCB73

accent

#E83FCD

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0D0614

muted

#7D7A83

Preview Lab

Preview with #3F27BB

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

Preview Lab → · Contrast checker → · Palette generator →