#3F5BC3#3F5BC3

#3F5BC3 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.9% C 0.166 H 268.5°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BC3
RGB	rgb(63, 91, 195)
HSL	hsl(227, 52%, 51%)
HSV	hsv(227, 68%, 76%)
CMYK	cmyk(67.7%, 53.3%, 0%, 23.5%)
CIE-LAB	lab(41.97, 24.13, -57.59)
CIE-LCH	lch(41.97, 62.44, 292.73°)
OKLab	oklab(50.87% -0.0042 -0.1655)
OKLCH	oklch(50.87% 0.166 268.5)
XYZ	xyz(15.6379, 12.4776, 53.2035)
Luminance	0.1248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BC3 #C3A73F

analogous

#3F9DC3 #3F5BC3 #653FC3

triadic

#3F5BC3 #C33F5B #5BC33F

tetradic

#3F5BC3 #C33F9D #C3A73F #3FC365

square

#3F5BC3 #C33F9D #C3A73F #3FC365

split-complementary

#3F5BC3 #C3653F #9DC33F

monochromatic

#202F67 #2F4596 #3F5BC3 #6E83D2 #9CABE0

Accessibility & contrast

On white

6.01

#3F5BC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#3F5BC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BC3

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BC3	#FFFFFF	#000000	##FFFFFF
##3F5BC3	1.00	6.01	3.50	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1269C7

Deuteranopia (green-blind)

#005DC1

Tritanopia (blue-blind)

#007486

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f5bc3;
/* rgb */ color: rgb(63, 91, 195);
/* oklch */ color: oklch(50.9% 0.166 268.5);

Tailwind

colors: {
  custom: {
    50: '#8389d6',
    500: '#3f5bc3',
    950: '#000000',
  },
}

SCSS

$custom: #3f5bc3;
$custom-light: #8389d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5bc3",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 195
  },
  "hsl": {
    "h": 227.273,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.50867,
    "c": 0.16558,
    "h": 268.5
  },
  "luminance": 0.12479
}

Semantic roles & 50–950 ramp

primary

#3F5BC3

secondary

#CCC092

accent

#BD4CDC

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F5BC3

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

Preview Lab → · Contrast checker → · Palette generator →