#3F3BB2#3F3BB2

#3F3BB2 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.182 H 277.2°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#3F3BB2
RGB	rgb(63, 59, 178)
HSL	hsl(242, 50%, 46%)
HSV	hsv(242, 67%, 70%)
CMYK	cmyk(64.6%, 66.9%, 0%, 30.2%)
CIE-LAB	lab(32.70, 38.45, -62.69)
CIE-LCH	lch(32.70, 73.54, 301.52°)
OKLab	oklab(43.59% 0.0228 -0.1808)
OKLCH	oklch(43.59% 0.182 277.2)
XYZ	xyz(11.6471, 7.3981, 42.9250)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3BB2 #AEB23B

analogous

#3B73B2 #3F3BB2 #7B3BB2

triadic

#3F3BB2 #B23F3B #3BB23F

tetradic

#3F3BB2 #B23B73 #AEB23B #3BB27B

square

#3F3BB2 #B23B73 #AEB23B #3BB27B

split-complementary

#3F3BB2 #B27B3B #73B23B

monochromatic

#1E1D56 #2F2C84 #3F3BB2 #6460CA #908EDA

Accessibility & contrast

On white

8.47

#3F3BB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#3F3BB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3BB2

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3BB2	#FFFFFF	#000000	##FFFFFF
##3F3BB2	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0048B0

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f3bb2;
/* rgb */ color: rgb(63, 59, 178);
/* oklch */ color: oklch(43.6% 0.182 277.2);

Tailwind

colors: {
  custom: {
    50: '#8272ca',
    500: '#3f3bb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f3bb2;
$custom-light: #8272ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3bb2",
  "rgb": {
    "r": 63,
    "g": 59,
    "b": 178
  },
  "hsl": {
    "h": 242.017,
    "s": 50.211,
    "l": 46.471
  },
  "oklch": {
    "l": 0.43585,
    "c": 0.18224,
    "h": 277.2
  },
  "luminance": 0.07399
}

Semantic roles & 50–950 ramp

primary

#3F3BB2

secondary

#C2C485

accent

#DA4ED5

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3BB2

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

Preview Lab → · Contrast checker → · Palette generator →