#3F36AB#3F36AB

#3F36AB is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.1% C 0.179 H 278.9°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#3F36AB
RGB	rgb(63, 54, 171)
HSL	hsl(245, 52%, 44%)
HSV	hsv(245, 68%, 67%)
CMYK	cmyk(63.2%, 68.4%, 0%, 32.9%)
CIE-LAB	lab(30.96, 39.14, -61.36)
CIE-LCH	lch(30.96, 72.78, 302.54°)
OKLab	oklab(42.14% 0.0276 -0.1769)
OKLCH	oklch(42.14% 0.179 278.9)
XYZ	xyz(10.7174, 6.6345, 39.2360)
Luminance	0.0664 (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

#3F36AB #A2AB36

analogous

#3668AB #3F36AB #7A36AB

triadic

#3F36AB #AB3F36 #36AB3F

tetradic

#3F36AB #AB3668 #A2AB36 #36AB7A

square

#3F36AB #AB3668 #A2AB36 #36AB7A

split-complementary

#3F36AB #AB7A36 #68AB36

monochromatic

#1D194E #2E277C #3F36AB #5E55C9 #8A83D8

Accessibility & contrast

On white

9.02

#3F36AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#3F36AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F36AB

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F36AB	#FFFFFF	#000000	##FFFFFF
##3F36AB	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAF

Deuteranopia (green-blind)

#0044A9

Tritanopia (blue-blind)

#00556C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3f36ab;
/* rgb */ color: rgb(63, 54, 171);
/* oklch */ color: oklch(42.1% 0.179 278.9);

Tailwind

colors: {
  custom: {
    50: '#816ec5',
    500: '#3f36ab',
    950: '#000000',
  },
}

SCSS

$custom: #3f36ab;
$custom-light: #816ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f36ab",
  "rgb": {
    "r": 63,
    "g": 54,
    "b": 171
  },
  "hsl": {
    "h": 244.615,
    "s": 52,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42139,
    "c": 0.17905,
    "h": 278.9
  },
  "luminance": 0.06635
}

Semantic roles & 50–950 ramp

primary

#3F36AB

secondary

#BCC27B

accent

#DB4CD0

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F36AB

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

Preview Lab → · Contrast checker → · Palette generator →