#3F5ECD#3F5ECD

#3F5ECD is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.2% C 0.175 H 268.0°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F5ECD
RGB	rgb(63, 94, 205)
HSL	hsl(227, 59%, 53%)
HSV	hsv(227, 69%, 80%)
CMYK	cmyk(69.3%, 54.1%, 0%, 19.6%)
CIE-LAB	lab(43.46, 25.79, -60.94)
CIE-LCH	lch(43.46, 66.18, 292.94°)
OKLab	oklab(52.22% -0.0061 -0.1754)
OKLCH	oklch(52.22% 0.175 268)
XYZ	xyz(17.0682, 13.4682, 59.4459)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5ECD #CDAE3F

analogous

#3FA5CD #3F5ECD #673FCD

triadic

#3F5ECD #CD3F5E #5ECD3F

tetradic

#3F5ECD #CD3FA5 #CDAE3F #3FCD67

square

#3F5ECD #CD3FA5 #CDAE3F #3FCD67

split-complementary

#3F5ECD #CD673F #A5CD3F

monochromatic

#1E3174 #2B45A4 #3F5ECD #7087DA #A0AFE6

Accessibility & contrast

On white

5.68

#3F5ECD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3F5ECD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5ECD

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5ECD	#FFFFFF	#000000	##FFFFFF
##3F5ECD	1.00	5.68	3.69	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#016DD1

Deuteranopia (green-blind)

#0060CB

Tritanopia (blue-blind)

#00798C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3f5ecd;
/* rgb */ color: rgb(63, 94, 205);
/* oklch */ color: oklch(52.2% 0.175 268.0);

Tailwind

colors: {
  custom: {
    50: '#858bdd',
    500: '#3f5ecd',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ecd;
$custom-light: #858bdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ecd",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 205
  },
  "hsl": {
    "h": 226.901,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.52218,
    "c": 0.17547,
    "h": 268
  },
  "luminance": 0.1347
}

Semantic roles & 50–950 ramp

primary

#3F5ECD

secondary

#D3C595

accent

#C046E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5ECD

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

Preview Lab → · Contrast checker → · Palette generator →