#3F3CBF#3F3CBF

#3F3CBF is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.9% C 0.198 H 275.9°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CBF
RGB	rgb(63, 60, 191)
HSL	hsl(241, 52%, 49%)
HSV	hsv(241, 69%, 75%)
CMYK	cmyk(67%, 68.6%, 0%, 25.1%)
CIE-LAB	lab(34.08, 42.17, -68.10)
CIE-LCH	lch(34.08, 80.10, 301.77°)
OKLab	oklab(44.95% 0.0204 -0.1966)
OKLCH	oklch(44.95% 0.198 275.9)
XYZ	xyz(13.0666, 8.0489, 50.1451)
Luminance	0.0805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.83

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3CBF #BCBF3C

analogous

#3C7BBF #3F3CBF #813CBF

triadic

#3F3CBF #BF3F3C #3CBF3F

tetradic

#3F3CBF #BF3C7B #BCBF3C #3CBF81

square

#3F3CBF #BF3C7B #BCBF3C #3CBF81

split-complementary

#3F3CBF #BF813C #7BBF3C

monochromatic

#201F62 #302D90 #3F3CBF #6B68D0 #9997DE

Accessibility & contrast

On white

8.05

#3F3CBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#3F3CBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CBF

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CBF	#FFFFFF	#000000	##FFFFFF
##3F3CBF	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C3

Deuteranopia (green-blind)

#004ABD

Tritanopia (blue-blind)

#005F79

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f3cbf;
/* rgb */ color: rgb(63, 60, 191);
/* oklch */ color: oklch(44.9% 0.198 275.9);

Tailwind

colors: {
  custom: {
    50: '#8473d3',
    500: '#3f3cbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f3cbf;
$custom-light: #8473d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3cbf",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 191
  },
  "hsl": {
    "h": 241.374,
    "s": 52.191,
    "l": 49.216
  },
  "oklch": {
    "l": 0.44945,
    "c": 0.1977,
    "h": 275.9
  },
  "luminance": 0.0805
}

Semantic roles & 50–950 ramp

primary

#3F3CBF

secondary

#C9CA8D

accent

#DC4CD8

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3CBF

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

Preview Lab → · Contrast checker → · Palette generator →