#3F36B2#3F36B2

#3F36B2 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.8% C 0.188 H 278.1°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#3F36B2
RGB	rgb(63, 54, 178)
HSL	hsl(244, 53%, 45%)
HSV	hsv(244, 70%, 70%)
CMYK	cmyk(64.6%, 69.7%, 0%, 30.2%)
CIE-LAB	lab(31.60, 41.44, -64.49)
CIE-LCH	lch(31.60, 76.66, 302.72°)
OKLab	oklab(42.79% 0.0265 -0.1861)
OKLCH	oklch(42.79% 0.188 278.1)
XYZ	xyz(11.4024, 6.9085, 42.8434)
Luminance	0.0691 (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

#3F36B2 #A9B236

analogous

#366BB2 #3F36B2 #7D36B2

triadic

#3F36B2 #B23F36 #36B23F

tetradic

#3F36B2 #B2366B #A9B236 #36B27D

square

#3F36B2 #B2366B #A9B236 #36B27D

split-complementary

#3F36B2 #B27D36 #6BB236

monochromatic

#1E1A54 #2E2883 #3F36B2 #6159CD #8E88DB

Accessibility & contrast

On white

8.82

#3F36B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#3F36B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F36B2

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F36B2	#FFFFFF	#000000	##FFFFFF
##3F36B2	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB6

Deuteranopia (green-blind)

#0045B0

Tritanopia (blue-blind)

#005770

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f36b2;
/* rgb */ color: rgb(63, 54, 178);
/* oklch */ color: oklch(42.8% 0.188 278.1);

Tailwind

colors: {
  custom: {
    50: '#826eca',
    500: '#3f36b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f36b2;
$custom-light: #826eca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f36b2",
  "rgb": {
    "r": 63,
    "g": 54,
    "b": 178
  },
  "hsl": {
    "h": 244.355,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42792,
    "c": 0.18797,
    "h": 278.1
  },
  "luminance": 0.06909
}

Semantic roles & 50–950 ramp

primary

#3F36B2

secondary

#C0C57F

accent

#DD4BD2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F36B2

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

Preview Lab → · Contrast checker → · Palette generator →