#3F77BE#3F77BE

#3F77BE is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.5% C 0.125 H 255.4°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F77BE
RGB	rgb(63, 119, 190)
HSL	hsl(214, 50%, 50%)
HSV	hsv(214, 67%, 75%)
CMYK	cmyk(66.8%, 37.4%, 0%, 25.5%)
CIE-LAB	lab(49.46, 4.67, -42.70)
CIE-LCH	lch(49.46, 42.95, 276.24°)
OKLab	oklab(56.52% -0.0317 -0.1214)
OKLCH	oklch(56.52% 0.125 255.4)
XYZ	xyz(17.9376, 17.9663, 51.2277)
Luminance	0.1797 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77BE #BE863F

analogous

#3FB7BE #3F77BE #463FBE

triadic

#3F77BE #BE3F77 #77BE3F

tetradic

#3F77BE #BE3FB7 #BE863F #3FBE46

square

#3F77BE #BE3FB7 #BE863F #3FBE46

split-complementary

#3F77BE #BE463F #B7BE3F

monochromatic

#213D62 #305A90 #3F77BE #6C97CE #9AB8DD

Accessibility & contrast

On white

4.57

#3F77BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#3F77BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F77BE

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77BE	#FFFFFF	#000000	##000000
##3F77BE	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577CC1

Deuteranopia (green-blind)

#4570BD

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f77be;
/* rgb */ color: rgb(63, 119, 190);
/* oklch */ color: oklch(56.5% 0.125 255.4);

Tailwind

colors: {
  custom: {
    50: '#819dd2',
    500: '#3f77be',
    950: '#000000',
  },
}

SCSS

$custom: #3f77be;
$custom-light: #819dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77be",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 190
  },
  "hsl": {
    "h": 213.543,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.56521,
    "c": 0.12543,
    "h": 255.4
  },
  "luminance": 0.17968
}

Semantic roles & 50–950 ramp

primary

#3F77BE

secondary

#C9B08F

accent

#9C4EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F77BE

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

Preview Lab → · Contrast checker → · Palette generator →