#3F5BC4#3F5BC4

#3F5BC4 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.9% C 0.167 H 268.6°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F5BC4
RGB	rgb(63, 91, 196)
HSL	hsl(227, 53%, 51%)
HSV	hsv(227, 68%, 77%)
CMYK	cmyk(67.9%, 53.6%, 0%, 23.1%)
CIE-LAB	lab(42.04, 24.49, -58.05)
CIE-LCH	lch(42.04, 63.01, 292.87°)
OKLab	oklab(50.94% -0.0041 -0.1669)
OKLCH	oklch(50.94% 0.167 268.6)
XYZ	xyz(15.7514, 12.5229, 53.8009)
Luminance	0.1252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5BC4 #C4A83F

analogous

#3F9EC4 #3F5BC4 #653FC4

triadic

#3F5BC4 #C43F5B #5BC43F

tetradic

#3F5BC4 #C43F9E #C4A83F #3FC465

square

#3F5BC4 #C43F9E #C4A83F #3FC465

split-complementary

#3F5BC4 #C4653F #9EC43F

monochromatic

#202F68 #2E4597 #3F5BC4 #6E83D2 #9DABE1

Accessibility & contrast

On white

5.99

#3F5BC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#3F5BC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5BC4

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5BC4	#FFFFFF	#000000	##FFFFFF
##3F5BC4	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)

#0F6AC8

Deuteranopia (green-blind)

#005DC2

Tritanopia (blue-blind)

#007486

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f5bc4;
/* rgb */ color: rgb(63, 91, 196);
/* oklch */ color: oklch(50.9% 0.167 268.6);

Tailwind

colors: {
  custom: {
    50: '#8389d7',
    500: '#3f5bc4',
    950: '#000000',
  },
}

SCSS

$custom: #3f5bc4;
$custom-light: #8389d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5bc4",
  "rgb": {
    "r": 63,
    "g": 91,
    "b": 196
  },
  "hsl": {
    "h": 227.368,
    "s": 52.988,
    "l": 50.784
  },
  "oklch": {
    "l": 0.50943,
    "c": 0.16695,
    "h": 268.6
  },
  "luminance": 0.12524
}

Semantic roles & 50–950 ramp

primary

#3F5BC4

secondary

#CDC092

accent

#BE4BDC

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F5BC4

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

Preview Lab → · Contrast checker → · Palette generator →