#3F3CB2#3F3CB2

#3F3CB2 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.181 H 277.0°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CB2
RGB	rgb(63, 60, 178)
HSL	hsl(242, 50%, 47%)
HSV	hsv(242, 66%, 70%)
CMYK	cmyk(64.6%, 66.3%, 0%, 30.2%)
CIE-LAB	lab(32.92, 37.84, -62.32)
CIE-LCH	lch(32.92, 72.91, 301.27°)
OKLab	oklab(43.75% 0.022 -0.1797)
OKLCH	oklch(43.75% 0.181 277)
XYZ	xyz(11.6990, 7.5019, 42.9423)
Luminance	0.0750 (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

#3F3CB2 #AFB23C

analogous

#3C74B2 #3F3CB2 #7A3CB2

triadic

#3F3CB2 #B23F3C #3CB23F

tetradic

#3F3CB2 #B23C74 #AFB23C #3CB27A

square

#3F3CB2 #B23C74 #AFB23C #3CB27A

split-complementary

#3F3CB2 #B27A3C #74B23C

monochromatic

#1F1D56 #2F2D84 #3F3CB2 #6461CA #918FD9

Accessibility & contrast

On white

8.40

#3F3CB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#3F3CB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CB2

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CB2	#FFFFFF	#000000	##FFFFFF
##3F3CB2	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0048B0

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3f3cb2;
/* rgb */ color: rgb(63, 60, 178);
/* oklch */ color: oklch(43.7% 0.181 277.0);

Tailwind

colors: {
  custom: {
    50: '#8272ca',
    500: '#3f3cb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f3cb2;
$custom-light: #8272ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3cb2",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 178
  },
  "hsl": {
    "h": 241.525,
    "s": 49.58,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43749,
    "c": 0.18106,
    "h": 277
  },
  "luminance": 0.07503
}

Semantic roles & 50–950 ramp

primary

#3F3CB2

secondary

#C3C486

accent

#D94FD6

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3CB2

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

Preview Lab → · Contrast checker → · Palette generator →