#3F53BD#3F53BD

#3F53BD is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.8% C 0.167 H 270.8°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#3F53BD
RGB	rgb(63, 83, 189)
HSL	hsl(230, 50%, 49%)
HSV	hsv(230, 67%, 74%)
CMYK	cmyk(66.7%, 56.1%, 0%, 25.9%)
CIE-LAB	lab(39.44, 27.13, -58.19)
CIE-LCH	lch(39.44, 64.20, 295.00°)
OKLab	oklab(48.83% 0.0025 -0.1674)
OKLCH	oklch(48.83% 0.167 270.8)
XYZ	xyz(14.3254, 10.9161, 49.4863)
Luminance	0.1092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53BD #BDA93F

analogous

#3F92BD #3F53BD #6A3FBD

triadic

#3F53BD #BD3F53 #53BD3F

tetradic

#3F53BD #BD3F92 #BDA93F #3FBD6A

square

#3F53BD #BD3F92 #BDA93F #3FBD6A

split-complementary

#3F53BD #BD6A3F #92BD3F

monochromatic

#202B61 #303F8F #3F53BD #6B7BCE #99A4DD

Accessibility & contrast

On white

6.60

#3F53BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#3F53BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53BD

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53BD	#FFFFFF	#000000	##FFFFFF
##3F53BD	1.00	6.60	3.18	6.60
#FFFFFF	6.60	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C1

Deuteranopia (green-blind)

#0057BB

Tritanopia (blue-blind)

#006D80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f53bd;
/* rgb */ color: rgb(63, 83, 189);
/* oklch */ color: oklch(48.8% 0.167 270.8);

Tailwind

colors: {
  custom: {
    50: '#8283d2',
    500: '#3f53bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f53bd;
$custom-light: #8283d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53bd",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 189
  },
  "hsl": {
    "h": 230.476,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.48832,
    "c": 0.16741,
    "h": 270.8
  },
  "luminance": 0.10917
}

Semantic roles & 50–950 ramp

primary

#3F53BD

secondary

#C9C08F

accent

#C34EDA

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F53BD

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

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