#3F337E#3F337E

#3F337E is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.8% C 0.122 H 286.3°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#3F337E
RGB	rgb(63, 51, 126)
HSL	hsl(250, 42%, 35%)
HSV	hsv(250, 60%, 49%)
CMYK	cmyk(50%, 59.5%, 0%, 50.6%)
CIE-LAB	lab(26.54, 26.22, -40.95)
CIE-LCH	lch(26.54, 48.63, 302.64°)
OKLab	oklab(37.75% 0.0343 -0.117)
OKLCH	oklch(37.75% 0.122 286.3)
XYZ	xyz(6.9985, 4.9305, 20.3175)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F337E #727E33

analogous

#334D7E #3F337E #65337E

triadic

#3F337E #7E3F33 #337E3F

tetradic

#3F337E #7E334D #727E33 #337E65

square

#3F337E #7E334D #727E33 #337E65

split-complementary

#3F337E #7E6533 #4D7E33

monochromatic

#131027 #292152 #3F337E #5545AA #7769C2

Accessibility & contrast

On white

10.57

#3F337E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#3F337E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F337E

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F337E	#FFFFFF	#000000	##FFFFFF
##3F337E	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004181

Deuteranopia (green-blind)

#003D7C

Tritanopia (blue-blind)

#294453

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #3f337e;
/* rgb */ color: rgb(63, 51, 126);
/* oklch */ color: oklch(37.8% 0.122 286.3);

Tailwind

colors: {
  custom: {
    50: '#796ba4',
    500: '#3f337e',
    950: '#000000',
  },
}

SCSS

$custom: #3f337e;
$custom-light: #796ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f337e",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 126
  },
  "hsl": {
    "h": 249.6,
    "s": 42.373,
    "l": 34.706
  },
  "oklch": {
    "l": 0.37753,
    "c": 0.1219,
    "h": 286.3
  },
  "luminance": 0.04931
}

Semantic roles & 50–950 ramp

primary

#3F337E

secondary

#9FAA63

accent

#D256BE

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#09060F

muted

#7B7A7F

Preview Lab

Preview with #3F337E

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

Preview Lab → · Contrast checker → · Palette generator →