#3F309F#3F309F

#3F309F is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.1% C 0.171 H 281.6°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F309F
RGB	rgb(63, 48, 159)
HSL	hsl(248, 54%, 41%)
HSV	hsv(248, 70%, 62%)
CMYK	cmyk(60.4%, 69.8%, 0%, 37.6%)
CIE-LAB	lab(28.57, 38.80, -58.03)
CIE-LCH	lch(28.57, 69.80, 303.77°)
OKLab	oklab(40.09% 0.0343 -0.1672)
OKLCH	oklch(40.09% 0.171 281.6)
XYZ	xyz(9.3629, 5.6732, 33.3958)
Luminance	0.0567 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.78

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F309F #909F30

analogous

#30589F #3F309F #76309F

triadic

#3F309F #9F3F30 #309F3F

tetradic

#3F309F #9F3058 #909F30 #309F76

square

#3F309F #9F3058 #909F30 #309F76

split-complementary

#3F309F #9F7630 #589F30

monochromatic

#1A1441 #2C2270 #3F309F #5745C7 #8174D5

Accessibility & contrast

On white

9.84

#3F309F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#3F309F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F309F

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F309F	#FFFFFF	#000000	##FFFFFF
##3F309F	1.00	9.84	2.13	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A2

Deuteranopia (green-blind)

#003F9D

Tritanopia (blue-blind)

#004D63

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3f309f;
/* rgb */ color: rgb(63, 48, 159);
/* oklch */ color: oklch(40.1% 0.171 281.6);

Tailwind

colors: {
  custom: {
    50: '#7f6abc',
    500: '#3f309f',
    950: '#000000',
  },
}

SCSS

$custom: #3f309f;
$custom-light: #7f6abc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f309f",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 159
  },
  "hsl": {
    "h": 248.108,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.40088,
    "c": 0.17064,
    "h": 281.6
  },
  "luminance": 0.05674
}

Semantic roles & 50–950 ramp

primary

#3F309F

secondary

#B2BD6E

accent

#DD4BC9

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #3F309F

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

Preview Lab → · Contrast checker → · Palette generator →