#3F5CD5#3F5CD5

#3F5CD5 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.5% C 0.189 H 268.8°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CD5
RGB	rgb(63, 92, 213)
HSL	hsl(228, 64%, 54%)
HSV	hsv(228, 70%, 84%)
CMYK	cmyk(70.4%, 56.8%, 0%, 16.5%)
CIE-LAB	lab(43.53, 29.93, -65.43)
CIE-LCH	lch(43.53, 71.95, 294.58°)
OKLab	oklab(52.45% -0.0041 -0.1886)
OKLCH	oklch(52.45% 0.189 268.8)
XYZ	xyz(17.8832, 13.5133, 64.6038)
Luminance	0.1351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CD5 #D5B83F

analogous

#3FA7D5 #3F5CD5 #6D3FD5

triadic

#3F5CD5 #D53F5C #5CD53F

tetradic

#3F5CD5 #D53FA7 #D5B83F #3FD56D

square

#3F5CD5 #D53FA7 #D5B83F #3FD56D

split-complementary

#3F5CD5 #D56D3F #A7D53F

monochromatic

#1C2F7E #2741B0 #3F5CD5 #7187E0 #A3B1EB

Accessibility & contrast

On white

5.67

#3F5CD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#3F5CD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CD5

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CD5	#FFFFFF	#000000	##FFFFFF
##3F5CD5	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ED9

Deuteranopia (green-blind)

#0060D3

Tritanopia (blue-blind)

#007A8F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3f5cd5;
/* rgb */ color: rgb(63, 92, 213);
/* oklch */ color: oklch(52.5% 0.189 268.8);

Tailwind

colors: {
  custom: {
    50: '#8789e3',
    500: '#3f5cd5',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cd5;
$custom-light: #8789e3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cd5",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 213
  },
  "hsl": {
    "h": 228.4,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.52452,
    "c": 0.18861,
    "h": 268.8
  },
  "luminance": 0.13515
}

Semantic roles & 50–950 ramp

primary

#3F5CD5

secondary

#D8CB98

accent

#C741E7

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0B15

muted

#7E7C84

Preview Lab

Preview with #3F5CD5

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

Preview Lab → · Contrast checker → · Palette generator →