#3F5CCF#3F5CCF

#3F5CCF is a mid, vivid blue. Relative luminance 0.132; OKLCH L 52.0% C 0.181 H 268.6°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CCF
RGB	rgb(63, 92, 207)
HSL	hsl(228, 60%, 53%)
HSV	hsv(228, 70%, 81%)
CMYK	cmyk(69.6%, 55.6%, 0%, 18.8%)
CIE-LAB	lab(43.08, 27.79, -62.70)
CIE-LCH	lch(43.08, 68.58, 293.90°)
OKLab	oklab(51.98% -0.0043 -0.1806)
OKLCH	oklch(51.98% 0.181 268.6)
XYZ	xyz(17.1357, 13.2143, 60.6669)
Luminance	0.1322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CCF #CFB23F

analogous

#3FA4CF #3F5CCF #6A3FCF

triadic

#3F5CCF #CF3F5C #5CCF3F

tetradic

#3F5CCF #CF3FA4 #CFB23F #3FCF6A

square

#3F5CCF #CF3FA4 #CFB23F #3FCF6A

split-complementary

#3F5CCF #CF6A3F #A4CF3F

monochromatic

#1E2F76 #2A43A7 #3F5CCF #7086DB #A1AFE7

Accessibility & contrast

On white

5.76

#3F5CCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3F5CCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CCF

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CCF	#FFFFFF	#000000	##FFFFFF
##3F5CCF	1.00	5.76	3.64	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD3

Deuteranopia (green-blind)

#005FCD

Tritanopia (blue-blind)

#00788C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5ccf;
/* rgb */ color: rgb(63, 92, 207);
/* oklch */ color: oklch(52.0% 0.181 268.6);

Tailwind

colors: {
  custom: {
    50: '#8589de',
    500: '#3f5ccf',
    950: '#000000',
  },
}

SCSS

$custom: #3f5ccf;
$custom-light: #8589de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5ccf",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 207
  },
  "hsl": {
    "h": 227.917,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.51981,
    "c": 0.18061,
    "h": 268.6
  },
  "luminance": 0.13216
}

Semantic roles & 50–950 ramp

primary

#3F5CCF

secondary

#D4C796

accent

#C345E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5CCF

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

Preview Lab → · Contrast checker → · Palette generator →