#3F39BA#3F39BA

#3F39BA is a dark, vivid blue. Relative luminance 0.075; OKLCH L 44.0% C 0.195 H 276.8°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#3F39BA
RGB	rgb(63, 57, 186)
HSL	hsl(243, 53%, 48%)
HSV	hsv(243, 69%, 73%)
CMYK	cmyk(66.1%, 69.4%, 0%, 27.1%)
CIE-LAB	lab(32.98, 42.29, -66.97)
CIE-LCH	lch(32.98, 79.21, 302.27°)
OKLab	oklab(44.01% 0.0232 -0.1933)
OKLCH	oklch(44.01% 0.195 276.8)
XYZ	xyz(12.3731, 7.5271, 47.2457)
Luminance	0.0753 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.09

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F39BA #B4BA39

analogous

#3973BA #3F39BA #8039BA

triadic

#3F39BA #BA3F39 #39BA3F

tetradic

#3F39BA #BA3973 #B4BA39 #39BA80

square

#3F39BA #BA3973 #B4BA39 #39BA80

split-complementary

#3F39BA #BA8039 #73BA39

monochromatic

#1F1C5C #2F2B8B #3F39BA #6761CF #9490DD

Accessibility & contrast

On white

8.38

#3F39BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3F39BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39BA

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39BA	#FFFFFF	#000000	##FFFFFF
##3F39BA	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BE

Deuteranopia (green-blind)

#0048B8

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f39ba;
/* rgb */ color: rgb(63, 57, 186);
/* oklch */ color: oklch(44.0% 0.195 276.8);

Tailwind

colors: {
  custom: {
    50: '#8470d0',
    500: '#3f39ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f39ba;
$custom-light: #8470d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39ba",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 186
  },
  "hsl": {
    "h": 242.791,
    "s": 53.086,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44009,
    "c": 0.19472,
    "h": 276.8
  },
  "luminance": 0.07528
}

Semantic roles & 50–950 ramp

primary

#3F39BA

secondary

#C5C887

accent

#DC4BD6

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3F39BA

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

Preview Lab → · Contrast checker → · Palette generator →