#3F5BC0#3F5BC0

#3F5BC0 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.6% C 0.161 H 268.4°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BC0
RGB	rgb(63, 91, 192)
HSL	hsl(227, 51%, 50%)
HSV	hsv(227, 67%, 75%)
CMYK	cmyk(67.2%, 52.6%, 0%, 24.7%)
CIE-LAB	lab(41.76, 23.05, -56.18)
CIE-LCH	lch(41.76, 60.73, 292.31°)
OKLab	oklab(50.64% -0.0044 -0.1614)
OKLCH	oklch(50.64% 0.161 268.4)
XYZ	xyz(15.3021, 12.3432, 51.4350)
Luminance	0.1235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BC0 #C0A43F

analogous

#3F9BC0 #3F5BC0 #643FC0

triadic

#3F5BC0 #C03F5B #5BC03F

tetradic

#3F5BC0 #C03F9B #C0A43F #3FC064

square

#3F5BC0 #C03F9B #C0A43F #3FC064

split-complementary

#3F5BC0 #C0643F #9BC03F

monochromatic

#212F64 #304592 #3F5BC0 #6D82CF #9BAADE

Accessibility & contrast

On white

6.05

#3F5BC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#3F5BC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BC0

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BC0	#FFFFFF	#000000	##FFFFFF
##3F5BC0	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1969C4

Deuteranopia (green-blind)

#005DBE

Tritanopia (blue-blind)

#007385

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f5bc0;
/* rgb */ color: rgb(63, 91, 192);
/* oklch */ color: oklch(50.6% 0.161 268.4);

Tailwind

colors: {
  custom: {
    50: '#8289d4',
    500: '#3f5bc0',
    950: '#000000',
  },
}

SCSS

$custom: #3f5bc0;
$custom-light: #8289d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5bc0",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 192
  },
  "hsl": {
    "h": 226.977,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.50643,
    "c": 0.16145,
    "h": 268.4
  },
  "luminance": 0.12345
}

Semantic roles & 50–950 ramp

primary

#3F5BC0

secondary

#CABE91

accent

#BC4EDA

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F5BC0

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

Preview Lab → · Contrast checker → · Palette generator →