#3F28B7#3F28B7

#3F28B7 is a dark, highly saturated blue. Relative luminance 0.060; OKLCH L 41.4% C 0.208 H 279.5°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#3F28B7
RGB	rgb(63, 40, 183)
HSL	hsl(250, 64%, 44%)
HSV	hsv(250, 78%, 72%)
CMYK	cmyk(65.6%, 78.1%, 0%, 28.2%)
CIE-LAB	lab(29.39, 50.58, -71.10)
CIE-LCH	lch(29.39, 87.25, 305.43°)
OKLab	oklab(41.38% 0.0344 -0.2053)
OKLCH	oklch(41.38% 0.208 279.5)
XYZ	xyz(11.3532, 5.9923, 45.3489)
Luminance	0.0599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.59

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F28B7 #A0B728

analogous

#2858B7 #3F28B7 #8628B7

triadic

#3F28B7 #B73F28 #28B73F

tetradic

#3F28B7 #B72858 #A0B728 #28B786

square

#3F28B7 #B72858 #A0B728 #28B786

split-complementary

#3F28B7 #B78628 #58B728

monochromatic

#1C1253 #2E1D85 #3F28B7 #5D46D6 #8978E1

Accessibility & contrast

On white

9.55

#3F28B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#3F28B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F28B7

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F28B7	#FFFFFF	#000000	##FFFFFF
##3F28B7	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABB

Deuteranopia (green-blind)

#0040B4

Tritanopia (blue-blind)

#00536F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3f28b7;
/* rgb */ color: rgb(63, 40, 183);
/* oklch */ color: oklch(41.4% 0.208 279.5);

Tailwind

colors: {
  custom: {
    50: '#8466ce',
    500: '#3f28b7',
    950: '#000000',
  },
}

SCSS

$custom: #3f28b7;
$custom-light: #8466ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f28b7",
  "rgb": {
    "r": 63,
    "g": 40,
    "b": 183
  },
  "hsl": {
    "h": 249.65,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.41379,
    "c": 0.20814,
    "h": 279.5
  },
  "luminance": 0.05993
}

Semantic roles & 50–950 ramp

primary

#3F28B7

secondary

#BBC972

accent

#E741CC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3F28B7

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

Preview Lab → · Contrast checker → · Palette generator →