#3F5CC9#3F5CC9

#3F5CC9 is a mid, vivid blue. Relative luminance 0.129; OKLCH L 51.5% C 0.173 H 268.5°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CC9
RGB	rgb(63, 92, 201)
HSL	hsl(227, 56%, 52%)
HSV	hsv(227, 69%, 79%)
CMYK	cmyk(68.7%, 54.2%, 0%, 21.2%)
CIE-LAB	lab(42.65, 25.64, -59.95)
CIE-LCH	lch(42.65, 65.20, 293.15°)
OKLab	oklab(51.52% -0.0047 -0.1725)
OKLCH	oklch(51.52% 0.173 268.5)
XYZ	xyz(16.4160, 12.9265, 56.8769)
Luminance	0.1293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CC9 #C9AC3F

analogous

#3FA1C9 #3F5CC9 #673FC9

triadic

#3F5CC9 #C93F5C #5CC93F

tetradic

#3F5CC9 #C93FA1 #C9AC3F #3FC967

square

#3F5CC9 #C93FA1 #C9AC3F #3FC967

split-complementary

#3F5CC9 #C9673F #A1C93F

monochromatic

#1F306F #2D449E #3F5CC9 #6F85D6 #9FADE4

Accessibility & contrast

On white

5.86

#3F5CC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3F5CC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CC9

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CC9	#FFFFFF	#000000	##FFFFFF
##3F5CC9	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#026BCD

Deuteranopia (green-blind)

#005FC7

Tritanopia (blue-blind)

#007689

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f5cc9;
/* rgb */ color: rgb(63, 92, 201);
/* oklch */ color: oklch(51.5% 0.173 268.5);

Tailwind

colors: {
  custom: {
    50: '#8489da',
    500: '#3f5cc9',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cc9;
$custom-light: #8489da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cc9",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 201
  },
  "hsl": {
    "h": 227.391,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.51519,
    "c": 0.17252,
    "h": 268.5
  },
  "luminance": 0.12928
}

Semantic roles & 50–950 ramp

primary

#3F5CC9

secondary

#D0C394

accent

#C048DF

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5CC9

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

Preview Lab → · Contrast checker → · Palette generator →