#3F75BD#3F75BD

#3F75BD is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 56.0% C 0.126 H 256.3°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F75BD
RGB	rgb(63, 117, 189)
HSL	hsl(214, 50%, 49%)
HSV	hsv(214, 67%, 74%)
CMYK	cmyk(66.7%, 38.1%, 0%, 25.9%)
CIE-LAB	lab(48.82, 5.54, -43.12)
CIE-LCH	lch(48.82, 43.48, 277.32°)
OKLab	oklab(56.01% -0.0299 -0.1226)
OKLCH	oklch(56.01% 0.126 256.3)
XYZ	xyz(17.5932, 17.4517, 50.5756)
Luminance	0.1745 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F75BD #BD873F

analogous

#3FB4BD #3F75BD #483FBD

triadic

#3F75BD #BD3F75 #75BD3F

tetradic

#3F75BD #BD3FB4 #BD873F #3FBD48

square

#3F75BD #BD3FB4 #BD873F #3FBD48

split-complementary

#3F75BD #BD483F #B4BD3F

monochromatic

#203C61 #30598F #3F75BD #6B96CE #99B6DD

Accessibility & contrast

On white

4.68

#3F75BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3F75BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F75BD

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F75BD	#FFFFFF	#000000	##FFFFFF
##3F75BD	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#557AC0

Deuteranopia (green-blind)

#436FBC

Tritanopia (blue-blind)

#008690

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3f75bd;
/* rgb */ color: rgb(63, 117, 189);
/* oklch */ color: oklch(56.0% 0.126 256.3);

Tailwind

colors: {
  custom: {
    50: '#819cd1',
    500: '#3f75bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f75bd;
$custom-light: #819cd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f75bd",
  "rgb": {
    "r": 63,
    "g": 117,
    "b": 189
  },
  "hsl": {
    "h": 214.286,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.56012,
    "c": 0.12623,
    "h": 256.3
  },
  "luminance": 0.17453
}

Semantic roles & 50–950 ramp

primary

#3F75BD

secondary

#C9B08F

accent

#9E4EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F75BD

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

Preview Lab → · Contrast checker → · Palette generator →