#3F339A#3F339A

#3F339A is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.1% C 0.160 H 281.6°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F339A
RGB	rgb(63, 51, 154)
HSL	hsl(247, 50%, 40%)
HSV	hsv(247, 67%, 60%)
CMYK	cmyk(59.1%, 66.9%, 0%, 39.6%)
CIE-LAB	lab(28.79, 35.38, -54.63)
CIE-LCH	lch(28.79, 65.08, 302.93°)
OKLab	oklab(40.11% 0.0324 -0.1572)
OKLCH	oklch(40.11% 0.16 281.6)
XYZ	xyz(9.0646, 5.7569, 31.1991)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.19

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F339A #8E9A33

analogous

#335B9A #3F339A #72339A

triadic

#3F339A #9A3F33 #339A3F

tetradic

#3F339A #9A335B #8E9A33 #339A72

square

#3F339A #9A335B #8E9A33 #339A72

split-complementary

#3F339A #9A7233 #5B9A33

monochromatic

#19153E #2C246C #3F339A #5648C2 #8176D2

Accessibility & contrast

On white

9.76

#3F339A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#3F339A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F339A

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F339A	#FFFFFF	#000000	##FFFFFF
##3F339A	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479D

Deuteranopia (green-blind)

#004098

Tritanopia (blue-blind)

#074D62

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3f339a;
/* rgb */ color: rgb(63, 51, 154);
/* oklch */ color: oklch(40.1% 0.160 281.6);

Tailwind

colors: {
  custom: {
    50: '#7e6cb9',
    500: '#3f339a',
    950: '#000000',
  },
}

SCSS

$custom: #3f339a;
$custom-light: #7e6cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f339a",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 154
  },
  "hsl": {
    "h": 246.99,
    "s": 50.244,
    "l": 40.196
  },
  "oklch": {
    "l": 0.40109,
    "c": 0.16048,
    "h": 281.6
  },
  "luminance": 0.05758
}

Semantic roles & 50–950 ramp

primary

#3F339A

secondary

#B1BA6F

accent

#DA4EC9

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0711

muted

#7C7A80

Preview Lab

Preview with #3F339A

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

Preview Lab → · Contrast checker → · Palette generator →