#3F339E#3F339E

#3F339E is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.5% C 0.166 H 281.1°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F339E
RGB	rgb(63, 51, 158)
HSL	hsl(247, 51%, 41%)
HSV	hsv(247, 68%, 62%)
CMYK	cmyk(60.1%, 67.7%, 0%, 38%)
CIE-LAB	lab(29.14, 36.69, -56.49)
CIE-LCH	lch(29.14, 67.36, 303.00°)
OKLab	oklab(40.47% 0.0319 -0.1627)
OKLCH	oklch(40.47% 0.166 281.1)
XYZ	xyz(9.4033, 5.8924, 32.9830)
Luminance	0.0589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.67

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F339E #929E33

analogous

#335C9E #3F339E #74339E

triadic

#3F339E #9E3F33 #339E3F

tetradic

#3F339E #9E335C #929E33 #339E74

square

#3F339E #9E335C #929E33 #339E74

split-complementary

#3F339E #9E7433 #5C9E33

monochromatic

#1A1541 #2D2470 #3F339E #574AC4 #8278D3

Accessibility & contrast

On white

9.64

#3F339E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#3F339E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F339E

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F339E	#FFFFFF	#000000	##FFFFFF
##3F339E	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A1

Deuteranopia (green-blind)

#00419C

Tritanopia (blue-blind)

#004F64

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3f339e;
/* rgb */ color: rgb(63, 51, 158);
/* oklch */ color: oklch(40.5% 0.166 281.1);

Tailwind

colors: {
  custom: {
    50: '#7f6cbc',
    500: '#3f339e',
    950: '#000000',
  },
}

SCSS

$custom: #3f339e;
$custom-light: #7f6cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f339e",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 158
  },
  "hsl": {
    "h": 246.729,
    "s": 51.196,
    "l": 40.98
  },
  "oklch": {
    "l": 0.40469,
    "c": 0.16575,
    "h": 281.1
  },
  "luminance": 0.05893
}

Semantic roles & 50–950 ramp

primary

#3F339E

secondary

#B3BC71

accent

#DB4DCB

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3F339E

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

Preview Lab → · Contrast checker → · Palette generator →