#3F5CC0#3F5CC0

#3F5CC0 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.8% C 0.160 H 268.1°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CC0
RGB	rgb(63, 92, 192)
HSL	hsl(227, 51%, 50%)
HSV	hsv(227, 67%, 75%)
CMYK	cmyk(67.2%, 52.1%, 0%, 24.7%)
CIE-LAB	lab(42.02, 22.41, -55.75)
CIE-LCH	lch(42.02, 60.09, 291.90°)
OKLab	oklab(50.85% -0.0053 -0.1601)
OKLCH	oklch(50.85% 0.16 268.1)
XYZ	xyz(15.3882, 12.5154, 51.4637)
Luminance	0.1252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CC0 #C0A33F

analogous

#3F9CC0 #3F5CC0 #633FC0

triadic

#3F5CC0 #C03F5C #5CC03F

tetradic

#3F5CC0 #C03F9C #C0A33F #3FC063

square

#3F5CC0 #C03F9C #C0A33F #3FC063

split-complementary

#3F5CC0 #C0633F #9CC03F

monochromatic

#213064 #304692 #3F5CC0 #6D83CF #9BAADE

Accessibility & contrast

On white

5.99

#3F5CC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#3F5CC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CC0

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CC0	#FFFFFF	#000000	##FFFFFF
##3F5CC0	1.00	5.99	3.50	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D69C4

Deuteranopia (green-blind)

#005EBE

Tritanopia (blue-blind)

#007485

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f5cc0;
/* rgb */ color: rgb(63, 92, 192);
/* oklch */ color: oklch(50.8% 0.160 268.1);

Tailwind

colors: {
  custom: {
    50: '#8289d4',
    500: '#3f5cc0',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cc0;
$custom-light: #8289d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cc0",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 192
  },
  "hsl": {
    "h": 226.512,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.50845,
    "c": 0.1602,
    "h": 268.1
  },
  "luminance": 0.12517
}

Semantic roles & 50–950 ramp

primary

#3F5CC0

secondary

#CABD91

accent

#BB4EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F5CC0

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

Preview Lab → · Contrast checker → · Palette generator →