#3F3CB6#3F3CB6

#3F3CB6 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.1% C 0.186 H 276.6°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#3F3CB6
RGB	rgb(63, 60, 182)
HSL	hsl(241, 50%, 47%)
HSV	hsv(241, 67%, 71%)
CMYK	cmyk(65.4%, 67%, 0%, 28.6%)
CIE-LAB	lab(33.27, 39.18, -64.12)
CIE-LCH	lch(33.27, 75.14, 301.43°)
OKLab	oklab(44.11% 0.0215 -0.185)
OKLCH	oklch(44.11% 0.186 276.6)
XYZ	xyz(12.1065, 7.6649, 45.0884)
Luminance	0.0767 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.60

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3CB6 #B3B63C

analogous

#3C76B6 #3F3CB6 #7C3CB6

triadic

#3F3CB6 #B63F3C #3CB63F

tetradic

#3F3CB6 #B63C76 #B3B63C #3CB67C

square

#3F3CB6 #B63C76 #B3B63C #3CB67C

split-complementary

#3F3CB6 #B67C3C #76B63C

monochromatic

#1F1E5A #2F2D88 #3F3CB6 #6663CC #9391DB

Accessibility & contrast

On white

8.29

#3F3CB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3F3CB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3CB6

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3CB6	#FFFFFF	#000000	##FFFFFF
##3F3CB6	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BA

Deuteranopia (green-blind)

#0049B4

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3cb6;
/* rgb */ color: rgb(63, 60, 182);
/* oklch */ color: oklch(44.1% 0.186 276.6);

Tailwind

colors: {
  custom: {
    50: '#8372cd',
    500: '#3f3cb6',
    950: '#000000',
  },
}

SCSS

$custom: #3f3cb6;
$custom-light: #8372cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3cb6",
  "rgb": {
    "r": 63,
    "g": 60,
    "b": 182
  },
  "hsl": {
    "h": 241.475,
    "s": 50.413,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44113,
    "c": 0.18624,
    "h": 276.6
  },
  "luminance": 0.07666
}

Semantic roles & 50–950 ramp

primary

#3F3CB6

secondary

#C4C688

accent

#DA4ED6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3F3CB6

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

Preview Lab → · Contrast checker → · Palette generator →