#3F3CBB#3F3CBB

#3F3CBB is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.6% C 0.193 H 276.2°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CBB
RGB	rgb(63, 60, 187)
HSL	hsl(241, 51%, 48%)
HSV	hsv(241, 68%, 73%)
CMYK	cmyk(66.3%, 67.9%, 0%, 26.7%)
CIE-LAB	lab(33.72, 40.85, -66.34)
CIE-LCH	lch(33.72, 77.91, 301.62°)
OKLab	oklab(44.57% 0.0209 -0.1915)
OKLCH	oklch(44.57% 0.193 276.2)
XYZ	xyz(12.6325, 7.8752, 47.8584)
Luminance	0.0788 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.67

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3CBB #B8BB3C

analogous

#3C78BB #3F3CBB #7E3CBB

triadic

#3F3CBB #BB3F3C #3CBB3F

tetradic

#3F3CBB #BB3C78 #B8BB3C #3CBB7E

square

#3F3CBB #BB3C78 #B8BB3C #3CBB7E

split-complementary

#3F3CBB #BB7E3C #78BB3C

monochromatic

#201E5E #2F2D8D #3F3CBB #6966CE #9695DD

Accessibility & contrast

On white

8.15

#3F3CBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#3F3CBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CBB

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CBB	#FFFFFF	#000000	##FFFFFF
##3F3CBB	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BF

Deuteranopia (green-blind)

#004AB9

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f3cbb;
/* rgb */ color: rgb(63, 60, 187);
/* oklch */ color: oklch(44.6% 0.193 276.2);

Tailwind

colors: {
  custom: {
    50: '#8473d1',
    500: '#3f3cbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f3cbb;
$custom-light: #8473d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3cbb",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 187
  },
  "hsl": {
    "h": 241.417,
    "s": 51.417,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44573,
    "c": 0.19263,
    "h": 276.2
  },
  "luminance": 0.07876
}

Semantic roles & 50–950 ramp

primary

#3F3CBB

secondary

#C7C88B

accent

#DB4DD8

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3F3CBB

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

Preview Lab → · Contrast checker → · Palette generator →