#3F339C#3F339C

#3F339C is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.3% C 0.163 H 281.4°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F339C
RGB	rgb(63, 51, 156)
HSL	hsl(247, 51%, 41%)
HSV	hsv(247, 67%, 61%)
CMYK	cmyk(59.6%, 67.3%, 0%, 38.8%)
CIE-LAB	lab(28.96, 36.03, -55.56)
CIE-LCH	lch(28.96, 66.22, 302.96°)
OKLab	oklab(40.29% 0.0321 -0.1599)
OKLCH	oklch(40.29% 0.163 281.4)
XYZ	xyz(9.2326, 5.8241, 32.0837)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.93

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F339C #909C33

analogous

#335B9C #3F339C #73339C

triadic

#3F339C #9C3F33 #339C3F

tetradic

#3F339C #9C335B #909C33 #339C73

square

#3F339C #9C335B #909C33 #339C73

split-complementary

#3F339C #9C7333 #5B9C33

monochromatic

#1A1540 #2C246E #3F339C #5749C3 #8177D3

Accessibility & contrast

On white

9.70

#3F339C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#3F339C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F339C

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F339C	#FFFFFF	#000000	##FFFFFF
##3F339C	1.00	9.70	2.17	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489F

Deuteranopia (green-blind)

#00409A

Tritanopia (blue-blind)

#014E63

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3f339c;
/* rgb */ color: rgb(63, 51, 156);
/* oklch */ color: oklch(40.3% 0.163 281.4);

Tailwind

colors: {
  custom: {
    50: '#7e6cba',
    500: '#3f339c',
    950: '#000000',
  },
}

SCSS

$custom: #3f339c;
$custom-light: #7e6cba;
$custom-dark: #000000;

JSON

{
  "hex": "#3f339c",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 156
  },
  "hsl": {
    "h": 246.857,
    "s": 50.725,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40288,
    "c": 0.16312,
    "h": 281.4
  },
  "luminance": 0.05825
}

Semantic roles & 50–950 ramp

primary

#3F339C

secondary

#B2BB70

accent

#DA4ECA

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3F339C

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

Preview Lab → · Contrast checker → · Palette generator →