#3F76BB#3F76BB

#3F76BB is a mid, vivid cyan. Relative luminance 0.176; OKLCH L 56.1% C 0.122 H 255.1°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F76BB
RGB	rgb(63, 118, 187)
HSL	hsl(213, 50%, 49%)
HSV	hsv(213, 66%, 73%)
CMYK	cmyk(66.3%, 36.9%, 0%, 26.7%)
CIE-LAB	lab(49.01, 4.22, -41.68)
CIE-LCH	lch(49.01, 41.89, 275.78°)
OKLab	oklab(56.12% -0.0314 -0.1184)
OKLCH	oklch(56.12% 0.122 255.1)
XYZ	xyz(17.4947, 17.5997, 49.4792)
Luminance	0.1760 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F76BB #BB843F

analogous

#3FB4BB #3F76BB #463FBB

triadic

#3F76BB #BB3F76 #76BB3F

tetradic

#3F76BB #BB3FB4 #BB843F #3FBB46

square

#3F76BB #BB3FB4 #BB843F #3FBB46

split-complementary

#3F76BB #BB463F #B4BB3F

monochromatic

#203C5F #30598D #3F76BB #6A96CD #98B6DC

Accessibility & contrast

On white

4.65

#3F76BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3F76BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F76BB

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F76BB	#FFFFFF	#000000	##FFFFFF
##3F76BB	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBE

Deuteranopia (green-blind)

#466FBA

Tritanopia (blue-blind)

#00868F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3f76bb;
/* rgb */ color: rgb(63, 118, 187);
/* oklch */ color: oklch(56.1% 0.122 255.1);

Tailwind

colors: {
  custom: {
    50: '#819dd0',
    500: '#3f76bb',
    950: '#000000',
  },
}

SCSS

$custom: #3f76bb;
$custom-light: #819dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f76bb",
  "rgb": {
    "r": 63,
    "g": 118,
    "b": 187
  },
  "hsl": {
    "h": 213.387,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.5612,
    "c": 0.12249,
    "h": 255.1
  },
  "luminance": 0.17601
}

Semantic roles & 50–950 ramp

primary

#3F76BB

secondary

#C8AE8E

accent

#9C4FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F76BB

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

Preview Lab → · Contrast checker → · Palette generator →