#3F28BC#3F28BC

#3F28BC is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.9% C 0.214 H 278.9°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#3F28BC
RGB	rgb(63, 40, 188)
HSL	hsl(249, 65%, 45%)
HSV	hsv(249, 79%, 74%)
CMYK	cmyk(66.5%, 78.7%, 0%, 26.3%)
CIE-LAB	lab(29.92, 52.07, -73.19)
CIE-LCH	lch(29.92, 89.82, 305.43°)
OKLab	oklab(41.9% 0.033 -0.2114)
OKLCH	oklch(41.9% 0.214 278.9)
XYZ	xyz(11.8829, 6.2042, 48.1385)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F28BC #A5BC28

analogous

#285BBC #3F28BC #8928BC

triadic

#3F28BC #BC3F28 #28BC3F

tetradic

#3F28BC #BC285B #A5BC28 #28BC89

square

#3F28BC #BC285B #A5BC28 #28BC89

split-complementary

#3F28BC #BC8928 #5BBC28

monochromatic

#1D1357 #2E1D8A #3F28BC #5F49D8 #8C7BE3

Accessibility & contrast

On white

9.37

#3F28BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#3F28BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F28BC

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F28BC	#FFFFFF	#000000	##FFFFFF
##3F28BC	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CC0

Deuteranopia (green-blind)

#0040B9

Tritanopia (blue-blind)

#005572

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f28bc;
/* rgb */ color: rgb(63, 40, 188);
/* oklch */ color: oklch(41.9% 0.214 278.9);

Tailwind

colors: {
  custom: {
    50: '#8566d2',
    500: '#3f28bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f28bc;
$custom-light: #8566d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f28bc",
  "rgb": {
    "r": 63,
    "g": 40,
    "b": 188
  },
  "hsl": {
    "h": 249.324,
    "s": 64.912,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41904,
    "c": 0.21392,
    "h": 278.9
  },
  "luminance": 0.06205
}

Semantic roles & 50–950 ramp

primary

#3F28BC

secondary

#BECB75

accent

#E840CE

background

#F9F6FD

surface

#F1EBFA

border

#CBC6D3

text

#0D0614

muted

#7E7A83

Preview Lab

Preview with #3F28BC

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

Preview Lab → · Contrast checker → · Palette generator →