#3F75BF#3F75BF

#3F75BF is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 56.1% C 0.129 H 256.8°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F75BF
RGB	rgb(63, 117, 191)
HSL	hsl(215, 50%, 50%)
HSV	hsv(215, 67%, 75%)
CMYK	cmyk(67%, 38.7%, 0%, 25.1%)
CIE-LAB	lab(48.93, 6.25, -44.10)
CIE-LCH	lch(48.93, 44.54, 278.06°)
OKLab	oklab(56.13% -0.0294 -0.1255)
OKLCH	oklch(56.13% 0.129 256.8)
XYZ	xyz(17.8118, 17.5391, 51.7268)
Luminance	0.1754 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F75BF #BF893F

analogous

#3FB5BF #3F75BF #493FBF

triadic

#3F75BF #BF3F75 #75BF3F

tetradic

#3F75BF #BF3FB5 #BF893F #3FBF49

square

#3F75BF #BF3FB5 #BF893F #3FBF49

split-complementary

#3F75BF #BF493F #B5BF3F

monochromatic

#213D63 #305991 #3F75BF #6D96CF #9BB7DE

Accessibility & contrast

On white

4.66

#3F75BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#3F75BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F75BF

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F75BF	#FFFFFF	#000000	##FFFFFF
##3F75BF	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#547BC2

Deuteranopia (green-blind)

#416FBD

Tritanopia (blue-blind)

#008691

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3f75bf;
/* rgb */ color: rgb(63, 117, 191);
/* oklch */ color: oklch(56.1% 0.129 256.8);

Tailwind

colors: {
  custom: {
    50: '#819cd3',
    500: '#3f75bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f75bf;
$custom-light: #819cd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f75bf",
  "rgb": {
    "r": 63,
    "g": 117,
    "b": 191
  },
  "hsl": {
    "h": 214.688,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56131,
    "c": 0.12891,
    "h": 256.8
  },
  "luminance": 0.17541
}

Semantic roles & 50–950 ramp

primary

#3F75BF

secondary

#CAB190

accent

#9F4EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F75BF

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

Preview Lab → · Contrast checker → · Palette generator →