#3F309A#3F309A

#3F309A is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.6% C 0.164 H 282.3°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F309A
RGB	rgb(63, 48, 154)
HSL	hsl(248, 52%, 40%)
HSV	hsv(248, 69%, 60%)
CMYK	cmyk(59.1%, 68.8%, 0%, 39.6%)
CIE-LAB	lab(28.12, 37.19, -55.72)
CIE-LCH	lch(28.12, 66.99, 303.72°)
OKLab	oklab(39.63% 0.0351 -0.1604)
OKLCH	oklch(39.63% 0.164 282.3)
XYZ	xyz(8.9378, 5.5032, 31.1568)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F309A #8B9A30

analogous

#30569A #3F309A #74309A

triadic

#3F309A #9A3F30 #309A3F

tetradic

#3F309A #9A3056 #8B9A30 #309A74

square

#3F309A #9A3056 #8B9A30 #309A74

split-complementary

#3F309A #9A7430 #569A30

monochromatic

#19133D #2C216B #3F309A #5543C4 #7F72D3

Accessibility & contrast

On white

10.00

#3F309A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#3F309A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F309A

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F309A	#FFFFFF	#000000	##FFFFFF
##3F309A	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469D

Deuteranopia (green-blind)

#003F98

Tritanopia (blue-blind)

#084B61

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3f309a;
/* rgb */ color: rgb(63, 48, 154);
/* oklch */ color: oklch(39.6% 0.164 282.3);

Tailwind

colors: {
  custom: {
    50: '#7e6ab9',
    500: '#3f309a',
    950: '#000000',
  },
}

SCSS

$custom: #3f309a;
$custom-light: #7e6ab9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f309a",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 154
  },
  "hsl": {
    "h": 248.491,
    "s": 52.475,
    "l": 39.608
  },
  "oklch": {
    "l": 0.39627,
    "c": 0.16418,
    "h": 282.3
  },
  "luminance": 0.05504
}

Semantic roles & 50–950 ramp

primary

#3F309A

secondary

#AFBB6B

accent

#DC4CC8

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #3F309A

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

Preview Lab → · Contrast checker → · Palette generator →