#3F5BC6#3F5BC6

#3F5BC6 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.1% C 0.170 H 268.6°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BC6
RGB	rgb(63, 91, 198)
HSL	hsl(228, 54%, 51%)
HSV	hsv(228, 68%, 78%)
CMYK	cmyk(68.2%, 54%, 0%, 22.4%)
CIE-LAB	lab(42.18, 25.20, -58.98)
CIE-LCH	lch(42.18, 64.14, 293.14°)
OKLab	oklab(51.09% -0.004 -0.1696)
OKLCH	oklch(51.09% 0.17 268.6)
XYZ	xyz(15.9805, 12.6146, 55.0078)
Luminance	0.1262 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BC6 #C6AA3F

analogous

#3F9EC6 #3F5BC6 #663FC6

triadic

#3F5BC6 #C63F5B #5BC63F

tetradic

#3F5BC6 #C63F9E #C6AA3F #3FC666

square

#3F5BC6 #C63F9E #C6AA3F #3FC666

split-complementary

#3F5BC6 #C6663F #9EC63F

monochromatic

#202F6B #2E449A #3F5BC6 #6E83D4 #9DACE2

Accessibility & contrast

On white

5.96

#3F5BC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#3F5BC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BC6

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BC6	#FFFFFF	#000000	##FFFFFF
##3F5BC6	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#076ACA

Deuteranopia (green-blind)

#005EC4

Tritanopia (blue-blind)

#007587

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3f5bc6;
/* rgb */ color: rgb(63, 91, 198);
/* oklch */ color: oklch(51.1% 0.170 268.6);

Tailwind

colors: {
  custom: {
    50: '#8489d8',
    500: '#3f5bc6',
    950: '#000000',
  },
}

SCSS

$custom: #3f5bc6;
$custom-light: #8489d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5bc6",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 198
  },
  "hsl": {
    "h": 227.556,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.51094,
    "c": 0.16968,
    "h": 268.6
  },
  "luminance": 0.12616
}

Semantic roles & 50–950 ramp

primary

#3F5BC6

secondary

#CEC293

accent

#BF4ADE

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5BC6

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

Preview Lab → · Contrast checker → · Palette generator →