#3F36AA#3F36AA

#3F36AA is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.0% C 0.178 H 279.0°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F36AA
RGB	rgb(63, 54, 170)
HSL	hsl(245, 52%, 44%)
HSV	hsv(245, 68%, 67%)
CMYK	cmyk(62.9%, 68.2%, 0%, 33.3%)
CIE-LAB	lab(30.87, 38.81, -60.90)
CIE-LCH	lch(30.87, 72.22, 302.51°)
OKLab	oklab(42.05% 0.0277 -0.1756)
OKLCH	oklch(42.05% 0.178 279)
XYZ	xyz(10.6224, 6.5966, 38.7359)
Luminance	0.0660 (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

#3F36AA #A1AA36

analogous

#3667AA #3F36AA #7936AA

triadic

#3F36AA #AA3F36 #36AA3F

tetradic

#3F36AA #AA3667 #A1AA36 #36AA79

square

#3F36AA #AA3667 #A1AA36 #36AA79

split-complementary

#3F36AA #AA7936 #67AA36

monochromatic

#1D184D #2E277C #3F36AA #5D54C9 #8983D8

Accessibility & contrast

On white

9.05

#3F36AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3F36AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F36AA

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F36AA	#FFFFFF	#000000	##FFFFFF
##3F36AA	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAE

Deuteranopia (green-blind)

#0044A8

Tritanopia (blue-blind)

#00556B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3f36aa;
/* rgb */ color: rgb(63, 54, 170);
/* oklch */ color: oklch(42.0% 0.178 279.0);

Tailwind

colors: {
  custom: {
    50: '#816ec4',
    500: '#3f36aa',
    950: '#000000',
  },
}

SCSS

$custom: #3f36aa;
$custom-light: #816ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f36aa",
  "rgb": {
    "r": 63,
    "g": 54,
    "b": 170
  },
  "hsl": {
    "h": 244.655,
    "s": 51.786,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42046,
    "c": 0.17775,
    "h": 279
  },
  "luminance": 0.06597
}

Semantic roles & 50–950 ramp

primary

#3F36AA

secondary

#BCC17B

accent

#DB4DD0

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3F36AA

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

Preview Lab → · Contrast checker → · Palette generator →