#3F5CCE#3F5CCE

#3F5CCE is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.9% C 0.179 H 268.6°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F5CCE
RGB	rgb(63, 92, 206)
HSL	hsl(228, 59%, 53%)
HSV	hsv(228, 69%, 81%)
CMYK	cmyk(69.4%, 55.3%, 0%, 19.2%)
CIE-LAB	lab(43.01, 27.43, -62.25)
CIE-LCH	lch(43.01, 68.02, 293.78°)
OKLab	oklab(51.9% -0.0044 -0.1792)
OKLCH	oklch(51.9% 0.179 268.6)
XYZ	xyz(17.0138, 13.1656, 60.0251)
Luminance	0.1317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5CCE #CEB13F

analogous

#3FA4CE #3F5CCE #693FCE

triadic

#3F5CCE #CE3F5C #5CCE3F

tetradic

#3F5CCE #CE3FA4 #CEB13F #3FCE69

square

#3F5CCE #CE3FA4 #CEB13F #3FCE69

split-complementary

#3F5CCE #CE693F #A4CE3F

monochromatic

#1E2F75 #2A43A6 #3F5CCE #7085DA #A1AFE7

Accessibility & contrast

On white

5.78

#3F5CCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#3F5CCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5CCE

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5CCE	#FFFFFF	#000000	##FFFFFF
##3F5CCE	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD2

Deuteranopia (green-blind)

#005FCC

Tritanopia (blue-blind)

#00788C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f5cce;
/* rgb */ color: rgb(63, 92, 206);
/* oklch */ color: oklch(51.9% 0.179 268.6);

Tailwind

colors: {
  custom: {
    50: '#8589de',
    500: '#3f5cce',
    950: '#000000',
  },
}

SCSS

$custom: #3f5cce;
$custom-light: #8589de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5cce",
  "rgb": {
    "r": 63,
    "g": 92,
    "b": 206
  },
  "hsl": {
    "h": 227.832,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.51903,
    "c": 0.17927,
    "h": 268.6
  },
  "luminance": 0.13167
}

Semantic roles & 50–950 ramp

primary

#3F5CCE

secondary

#D3C795

accent

#C345E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F5CCE

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

Preview Lab → · Contrast checker → · Palette generator →