#3F53CE#3F53CE

#3F53CE is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.2% C 0.190 H 270.8°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#3F53CE
RGB	rgb(63, 83, 206)
HSL	hsl(232, 59%, 53%)
HSV	hsv(232, 69%, 81%)
CMYK	cmyk(69.4%, 59.7%, 0%, 19.2%)
CIE-LAB	lab(40.73, 33.14, -65.95)
CIE-LCH	lch(40.73, 73.81, 296.68°)
OKLab	oklab(50.2% 0.0027 -0.1902)
OKLCH	oklch(50.2% 0.19 270.8)
XYZ	xyz(16.2799, 11.6979, 59.7805)
Luminance	0.1170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53CE #CEBA3F

analogous

#3F9BCE #3F53CE #723FCE

triadic

#3F53CE #CE3F53 #53CE3F

tetradic

#3F53CE #CE3F9B #CEBA3F #3FCE72

square

#3F53CE #CE3F9B #CEBA3F #3FCE72

split-complementary

#3F53CE #CE723F #9BCE3F

monochromatic

#1E2A75 #2A3BA6 #3F53CE #707FDA #A1AAE7

Accessibility & contrast

On white

6.29

#3F53CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#3F53CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53CE

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53CE	#FFFFFF	#000000	##FFFFFF
##3F53CE	1.00	6.29	3.34	6.29
#FFFFFF	6.29	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D2

Deuteranopia (green-blind)

#005ACC

Tritanopia (blue-blind)

#007288

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f53ce;
/* rgb */ color: rgb(63, 83, 206);
/* oklch */ color: oklch(50.2% 0.190 270.8);

Tailwind

colors: {
  custom: {
    50: '#8683de',
    500: '#3f53ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f53ce;
$custom-light: #8683de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53ce",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 206
  },
  "hsl": {
    "h": 231.608,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.50202,
    "c": 0.19025,
    "h": 270.8
  },
  "luminance": 0.117
}

Semantic roles & 50–950 ramp

primary

#3F53CE

secondary

#D3CB95

accent

#CD45E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3F53CE

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

Preview Lab → · Contrast checker → · Palette generator →