#3F3CBC#3F3CBC

#3F3CBC is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.7% C 0.194 H 276.2°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CBC
RGB	rgb(63, 60, 188)
HSL	hsl(241, 52%, 49%)
HSV	hsv(241, 68%, 74%)
CMYK	cmyk(66.5%, 68.1%, 0%, 26.3%)
CIE-LAB	lab(33.81, 41.18, -66.78)
CIE-LCH	lch(33.81, 78.45, 301.66°)
OKLab	oklab(44.67% 0.0208 -0.1928)
OKLCH	oklch(44.67% 0.194 276.2)
XYZ	xyz(12.7399, 7.9182, 48.4242)
Luminance	0.0792 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.70

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3CBC #B9BC3C

analogous

#3C79BC #3F3CBC #7F3CBC

triadic

#3F3CBC #BC3F3C #3CBC3F

tetradic

#3F3CBC #BC3C79 #B9BC3C #3CBC7F

square

#3F3CBC #BC3C79 #B9BC3C #3CBC7F

split-complementary

#3F3CBC #BC7F3C #79BC3C

monochromatic

#201E5F #2F2D8E #3F3CBC #6967CE #9795DD

Accessibility & contrast

On white

8.13

#3F3CBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#3F3CBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CBC

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CBC	#FFFFFF	#000000	##FFFFFF
##3F3CBC	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C0

Deuteranopia (green-blind)

#004ABA

Tritanopia (blue-blind)

#005E77

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f3cbc;
/* rgb */ color: rgb(63, 60, 188);
/* oklch */ color: oklch(44.7% 0.194 276.2);

Tailwind

colors: {
  custom: {
    50: '#8473d1',
    500: '#3f3cbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f3cbc;
$custom-light: #8473d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3cbc",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 188
  },
  "hsl": {
    "h": 241.406,
    "s": 51.613,
    "l": 48.627
  },
  "oklch": {
    "l": 0.44666,
    "c": 0.1939,
    "h": 276.2
  },
  "luminance": 0.07919
}

Semantic roles & 50–950 ramp

primary

#3F3CBC

secondary

#C7C98B

accent

#DB4DD8

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3F3CBC

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

Preview Lab → · Contrast checker → · Palette generator →