#3F5FC5#3F5FC5

#3F5FC5 is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.8% C 0.163 H 267.3°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F5FC5
RGB	rgb(63, 95, 197)
HSL	hsl(226, 54%, 51%)
HSV	hsv(226, 68%, 77%)
CMYK	cmyk(68%, 51.8%, 0%, 22.7%)
CIE-LAB	lab(43.17, 22.28, -56.80)
CIE-LCH	lch(43.17, 61.02, 291.42°)
OKLab	oklab(51.82% -0.0076 -0.1631)
OKLCH	oklch(51.82% 0.163 267.3)
XYZ	xyz(16.2167, 13.2708, 54.5194)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5FC5 #C5A53F

analogous

#3FA2C5 #3F5FC5 #623FC5

triadic

#3F5FC5 #C53F5F #5FC53F

tetradic

#3F5FC5 #C53FA2 #C5A53F #3FC562

square

#3F5FC5 #C53FA2 #C5A53F #3FC562

split-complementary

#3F5FC5 #C5623F #A2C53F

monochromatic

#20326A #2E4899 #3F5FC5 #6E86D3 #9DADE1

Accessibility & contrast

On white

5.75

#3F5FC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3F5FC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5FC5

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5FC5	#FFFFFF	#000000	##FFFFFF
##3F5FC5	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F6CC9

Deuteranopia (green-blind)

#0060C3

Tritanopia (blue-blind)

#007789

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5fc5;
/* rgb */ color: rgb(63, 95, 197);
/* oklch */ color: oklch(51.8% 0.163 267.3);

Tailwind

colors: {
  custom: {
    50: '#838bd7',
    500: '#3f5fc5',
    950: '#000000',
  },
}

SCSS

$custom: #3f5fc5;
$custom-light: #838bd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5fc5",
  "rgb": {
    "r": 63,
    "g": 95,
    "b": 197
  },
  "hsl": {
    "h": 225.672,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.51821,
    "c": 0.16333,
    "h": 267.3
  },
  "luminance": 0.13272
}

Semantic roles & 50–950 ramp

primary

#3F5FC5

secondary

#CEBF92

accent

#BA4BDD

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F5FC5

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

Preview Lab → · Contrast checker → · Palette generator →