#3F39AF#3F39AF

#3F39AF is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.181 H 277.8°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F39AF
RGB	rgb(63, 57, 175)
HSL	hsl(243, 51%, 45%)
HSV	hsv(243, 67%, 69%)
CMYK	cmyk(64%, 67.4%, 0%, 31.4%)
CIE-LAB	lab(31.98, 38.66, -62.07)
CIE-LCH	lch(31.98, 73.13, 301.92°)
OKLab	oklab(42.99% 0.0247 -0.179)
OKLCH	oklch(42.99% 0.181 277.8)
XYZ	xyz(11.2484, 7.0773, 41.3224)
Luminance	0.0708 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F39AF #A9AF39

analogous

#396EAF #3F39AF #7A39AF

triadic

#3F39AF #AF3F39 #39AF3F

tetradic

#3F39AF #AF396E #A9AF39 #39AF7A

square

#3F39AF #AF396E #A9AF39 #39AF7A

split-complementary

#3F39AF #AF7A39 #6EAF39

monochromatic

#1E1B53 #2E2A81 #3F39AF #615BCA #8E8AD9

Accessibility & contrast

On white

8.69

#3F39AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3F39AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39AF

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39AF	#FFFFFF	#000000	##FFFFFF
##3F39AF	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B3

Deuteranopia (green-blind)

#0046AD

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f39af;
/* rgb */ color: rgb(63, 57, 175);
/* oklch */ color: oklch(43.0% 0.181 277.8);

Tailwind

colors: {
  custom: {
    50: '#8170c8',
    500: '#3f39af',
    950: '#000000',
  },
}

SCSS

$custom: #3f39af;
$custom-light: #8170c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39af",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 175
  },
  "hsl": {
    "h": 243.051,
    "s": 50.862,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42986,
    "c": 0.1807,
    "h": 277.8
  },
  "luminance": 0.07078
}

Semantic roles & 50–950 ramp

primary

#3F39AF

secondary

#C0C381

accent

#DA4DD3

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F39AF

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

Preview Lab → · Contrast checker → · Palette generator →