#3F53CF#3F53CF

#3F53CF is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.3% C 0.192 H 270.8°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F53CF
RGB	rgb(63, 83, 207)
HSL	hsl(232, 60%, 53%)
HSV	hsv(232, 70%, 81%)
CMYK	cmyk(69.6%, 59.9%, 0%, 18.8%)
CIE-LAB	lab(40.81, 33.50, -66.40)
CIE-LCH	lch(40.81, 74.37, 296.77°)
OKLab	oklab(50.29% 0.0027 -0.1915)
OKLCH	oklch(50.29% 0.192 270.8)
XYZ	xyz(16.4018, 11.7467, 60.4223)
Luminance	0.1175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53CF #CFBB3F

analogous

#3F9BCF #3F53CF #733FCF

triadic

#3F53CF #CF3F53 #53CF3F

tetradic

#3F53CF #CF3F9B #CFBB3F #3FCF73

square

#3F53CF #CF3F9B #CFBB3F #3FCF73

split-complementary

#3F53CF #CF733F #9BCF3F

monochromatic

#1E2A76 #2A3BA7 #3F53CF #707FDB #A1ABE7

Accessibility & contrast

On white

6.27

#3F53CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#3F53CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53CF

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53CF	#FFFFFF	#000000	##FFFFFF
##3F53CF	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D3

Deuteranopia (green-blind)

#005ACD

Tritanopia (blue-blind)

#007289

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f53cf;
/* rgb */ color: rgb(63, 83, 207);
/* oklch */ color: oklch(50.3% 0.192 270.8);

Tailwind

colors: {
  custom: {
    50: '#8683df',
    500: '#3f53cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f53cf;
$custom-light: #8683df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53cf",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 207
  },
  "hsl": {
    "h": 231.667,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.50285,
    "c": 0.19156,
    "h": 270.8
  },
  "luminance": 0.11748
}

Semantic roles & 50–950 ramp

primary

#3F53CF

secondary

#D4CB96

accent

#CD45E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3F53CF

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

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