#3F77A9#3F77A9

#3F77A9 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.4% C 0.098 H 247.5°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F77A9
RGB	rgb(63, 119, 169)
HSL	hsl(208, 46%, 45%)
HSV	hsv(208, 63%, 66%)
CMYK	cmyk(62.7%, 29.6%, 0%, 33.7%)
CIE-LAB	lab(48.40, -2.64, -32.20)
CIE-LCH	lch(48.40, 32.31, 265.31°)
OKLab	oklab(55.35% -0.0375 -0.0908)
OKLCH	oklch(55.35% 0.098 247.5)
XYZ	xyz(15.8055, 17.1135, 39.9987)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77A9 #A9713F

analogous

#3FA9A6 #3F77A9 #3F42A9

triadic

#3F77A9 #A93F77 #77A93F

tetradic

#3F77A9 #A63FA9 #A9713F #42A93F

square

#3F77A9 #A63FA9 #A9713F #42A93F

split-complementary

#3F77A9 #A93F42 #A9A63F

monochromatic

#1E3850 #2E587C #3F77A9 #6195C4 #8EB3D5

Accessibility & contrast

On white

4.75

#3F77A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3F77A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F77A9

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77A9	#FFFFFF	#000000	##FFFFFF
##3F77A9	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6179AB

Deuteranopia (green-blind)

#536EA8

Tritanopia (blue-blind)

#008389

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f77a9;
/* rgb */ color: rgb(63, 119, 169);
/* oklch */ color: oklch(55.4% 0.098 247.5);

Tailwind

colors: {
  custom: {
    50: '#7e9ec3',
    500: '#3f77a9',
    950: '#000000',
  },
}

SCSS

$custom: #3f77a9;
$custom-light: #7e9ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77a9",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 169
  },
  "hsl": {
    "h": 208.302,
    "s": 45.69,
    "l": 45.49
  },
  "oklch": {
    "l": 0.55352,
    "c": 0.09822,
    "h": 247.5
  },
  "luminance": 0.17115
}

Semantic roles & 50–950 ramp

primary

#3F77A9

secondary

#C0A084

accent

#9052D5

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E12

muted

#7C7E81

Preview Lab

Preview with #3F77A9

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

Preview Lab → · Contrast checker → · Palette generator →