#3F309C#3F309C

#3F309C is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.8% C 0.167 H 282.0°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F309C
RGB	rgb(63, 48, 156)
HSL	hsl(248, 53%, 40%)
HSV	hsv(248, 69%, 61%)
CMYK	cmyk(59.6%, 69.2%, 0%, 38.8%)
CIE-LAB	lab(28.30, 37.83, -56.65)
CIE-LCH	lch(28.30, 68.12, 303.74°)
OKLab	oklab(39.81% 0.0348 -0.1631)
OKLCH	oklch(39.81% 0.167 282)
XYZ	xyz(9.1057, 5.5704, 32.0414)
Luminance	0.0557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F309C #8D9C30

analogous

#30579C #3F309C #75309C

triadic

#3F309C #9C3F30 #309C3F

tetradic

#3F309C #9C3057 #8D9C30 #309C75

square

#3F309C #9C3057 #8D9C30 #309C75

split-complementary

#3F309C #9C7530 #579C30

monochromatic

#19133E #2C226D #3F309C #5644C5 #8073D4

Accessibility & contrast

On white

9.93

#3F309C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#3F309C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F309C

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F309C	#FFFFFF	#000000	##FFFFFF
##3F309C	1.00	9.93	2.11	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469F

Deuteranopia (green-blind)

#003F9A

Tritanopia (blue-blind)

#024C62

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3f309c;
/* rgb */ color: rgb(63, 48, 156);
/* oklch */ color: oklch(39.8% 0.167 282.0);

Tailwind

colors: {
  custom: {
    50: '#7f6aba',
    500: '#3f309c',
    950: '#000000',
  },
}

SCSS

$custom: #3f309c;
$custom-light: #7f6aba;
$custom-dark: #000000;

JSON

{
  "hex": "#3f309c",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 156
  },
  "hsl": {
    "h": 248.333,
    "s": 52.941,
    "l": 40
  },
  "oklch": {
    "l": 0.3981,
    "c": 0.16677,
    "h": 282
  },
  "luminance": 0.05571
}

Semantic roles & 50–950 ramp

primary

#3F309C

secondary

#B1BC6C

accent

#DC4BC8

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #3F309C

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

Preview Lab → · Contrast checker → · Palette generator →