#3F5ECC#3F5ECC

#3F5ECC is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.1% C 0.174 H 268.0°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ECC
RGB	rgb(63, 94, 204)
HSL	hsl(227, 58%, 52%)
HSV	hsv(227, 69%, 80%)
CMYK	cmyk(69.1%, 53.9%, 0%, 20%)
CIE-LAB	lab(43.39, 25.44, -60.48)
CIE-LCH	lch(43.39, 65.61, 292.81°)
OKLab	oklab(52.14% -0.0061 -0.174)
OKLCH	oklch(52.14% 0.174 268)
XYZ	xyz(16.9479, 13.4201, 58.8122)
Luminance	0.1342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ECC #CCAD3F

analogous

#3FA4CC #3F5ECC #673FCC

triadic

#3F5ECC #CC3F5E #5ECC3F

tetradic

#3F5ECC #CC3FA4 #CCAD3F #3FCC67

square

#3F5ECC #CC3FA4 #CCAD3F #3FCC67

split-complementary

#3F5ECC #CC673F #A4CC3F

monochromatic

#1E3172 #2B45A3 #3F5ECC #6F87D9 #A0AFE6

Accessibility & contrast

On white

5.70

#3F5ECC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#3F5ECC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ECC

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ECC	#FFFFFF	#000000	##FFFFFF
##3F5ECC	1.00	5.70	3.68	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#066DD0

Deuteranopia (green-blind)

#0060CA

Tritanopia (blue-blind)

#00788C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5ecc;
/* rgb */ color: rgb(63, 94, 204);
/* oklch */ color: oklch(52.1% 0.174 268.0);

Tailwind

colors: {
  custom: {
    50: '#858bdc',
    500: '#3f5ecc',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ecc;
$custom-light: #858bdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ecc",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 204
  },
  "hsl": {
    "h": 226.809,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.52142,
    "c": 0.17411,
    "h": 268
  },
  "luminance": 0.13422
}

Semantic roles & 50–950 ramp

primary

#3F5ECC

secondary

#D2C595

accent

#BF47E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5ECC

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

Preview Lab → · Contrast checker → · Palette generator →