#3F5ECA#3F5ECA

#3F5ECA is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.0% C 0.171 H 267.9°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ECA
RGB	rgb(63, 94, 202)
HSL	hsl(227, 57%, 52%)
HSV	hsv(227, 69%, 79%)
CMYK	cmyk(68.8%, 53.5%, 0%, 20.8%)
CIE-LAB	lab(43.25, 24.72, -59.56)
CIE-LCH	lch(43.25, 64.48, 292.54°)
OKLab	oklab(51.99% -0.0063 -0.1713)
OKLCH	oklch(51.99% 0.171 267.9)
XYZ	xyz(16.7096, 13.3248, 57.5570)
Luminance	0.1333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ECA #CAAB3F

analogous

#3FA3CA #3F5ECA #663FCA

triadic

#3F5ECA #CA3F5E #5ECA3F

tetradic

#3F5ECA #CA3FA3 #CAAB3F #3FCA66

square

#3F5ECA #CA3FA3 #CAAB3F #3FCA66

split-complementary

#3F5ECA #CA663F #A3CA3F

monochromatic

#1F3170 #2C46A0 #3F5ECA #6F86D7 #9FAEE4

Accessibility & contrast

On white

5.73

#3F5ECA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3F5ECA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ECA

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ECA	#FFFFFF	#000000	##FFFFFF
##3F5ECA	1.00	5.73	3.67	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E6DCE

Deuteranopia (green-blind)

#0060C8

Tritanopia (blue-blind)

#00788B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5eca;
/* rgb */ color: rgb(63, 94, 202);
/* oklch */ color: oklch(52.0% 0.171 267.9);

Tailwind

colors: {
  custom: {
    50: '#848bdb',
    500: '#3f5eca',
    950: '#000000',
  },
}

SCSS

$custom: #3f5eca;
$custom-light: #848bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5eca",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 202
  },
  "hsl": {
    "h": 226.619,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.51991,
    "c": 0.1714,
    "h": 267.9
  },
  "luminance": 0.13326
}

Semantic roles & 50–950 ramp

primary

#3F5ECA

secondary

#D1C394

accent

#BE48E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5ECA

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

Preview Lab → · Contrast checker → · Palette generator →