#3F28BD#3F28BD

#3F28BD is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 42.0% C 0.215 H 278.8°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F28BD
RGB	rgb(63, 40, 189)
HSL	hsl(249, 65%, 45%)
HSV	hsv(249, 79%, 74%)
CMYK	cmyk(66.7%, 78.8%, 0%, 25.9%)
CIE-LAB	lab(30.03, 52.37, -73.60)
CIE-LCH	lch(30.03, 90.33, 305.43°)
OKLab	oklab(42.01% 0.0327 -0.2126)
OKLCH	oklch(42.01% 0.215 278.8)
XYZ	xyz(11.9910, 6.2475, 48.7082)
Luminance	0.0625 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F28BD #A6BD28

analogous

#285BBD #3F28BD #8A28BD

triadic

#3F28BD #BD3F28 #28BD3F

tetradic

#3F28BD #BD285B #A6BD28 #28BD8A

square

#3F28BD #BD285B #A6BD28 #28BD8A

split-complementary

#3F28BD #BD8A28 #5BBD28

monochromatic

#1D1358 #2E1D8A #3F28BD #604AD9 #8C7CE3

Accessibility & contrast

On white

9.33

#3F28BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3F28BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F28BD

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F28BD	#FFFFFF	#000000	##FFFFFF
##3F28BD	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CC1

Deuteranopia (green-blind)

#0041BA

Tritanopia (blue-blind)

#005572

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3f28bd;
/* rgb */ color: rgb(63, 40, 189);
/* oklch */ color: oklch(42.0% 0.215 278.8);

Tailwind

colors: {
  custom: {
    50: '#8666d2',
    500: '#3f28bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f28bd;
$custom-light: #8666d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f28bd",
  "rgb": {
    "r": 63,
    "g": 40,
    "b": 189
  },
  "hsl": {
    "h": 249.262,
    "s": 65.066,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4201,
    "c": 0.21508,
    "h": 278.8
  },
  "luminance": 0.06248
}

Semantic roles & 50–950 ramp

primary

#3F28BD

secondary

#BECB75

accent

#E840CE

background

#F9F6FD

surface

#F1EBFA

border

#CBC6D3

text

#0D0614

muted

#7E7A83

Preview Lab

Preview with #3F28BD

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

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