#3F77A5#3F77A5

#3F77A5 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.1% C 0.093 H 245.4°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F77A5
RGB	rgb(63, 119, 165)
HSL	hsl(207, 45%, 45%)
HSV	hsv(207, 62%, 65%)
CMYK	cmyk(61.8%, 27.9%, 0%, 35.3%)
CIE-LAB	lab(48.22, -4.00, -30.16)
CIE-LCH	lch(48.22, 30.42, 262.44°)
OKLab	oklab(55.14% -0.0388 -0.0848)
OKLCH	oklch(55.14% 0.093 245.4)
XYZ	xyz(15.4357, 16.9656, 38.0512)
Luminance	0.1697 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77A5 #A56D3F

analogous

#3FA5A0 #3F77A5 #3F44A5

triadic

#3F77A5 #A53F77 #77A53F

tetradic

#3F77A5 #A03FA5 #A56D3F #44A53F

square

#3F77A5 #A03FA5 #A56D3F #44A53F

split-complementary

#3F77A5 #A53F44 #A5A03F

monochromatic

#1D374C #2E5779 #3F77A5 #5F95C2 #8CB3D3

Accessibility & contrast

On white

4.78

#3F77A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#3F77A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F77A5

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77A5	#FFFFFF	#000000	##FFFFFF
##3F77A5	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6378A7

Deuteranopia (green-blind)

#556EA4

Tritanopia (blue-blind)

#008287

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f77a5;
/* rgb */ color: rgb(63, 119, 165);
/* oklch */ color: oklch(55.1% 0.093 245.4);

Tailwind

colors: {
  custom: {
    50: '#7d9ec0',
    500: '#3f77a5',
    950: '#000000',
  },
}

SCSS

$custom: #3f77a5;
$custom-light: #7d9ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77a5",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 165
  },
  "hsl": {
    "h": 207.059,
    "s": 44.737,
    "l": 44.706
  },
  "oklch": {
    "l": 0.55144,
    "c": 0.0933,
    "h": 245.4
  },
  "luminance": 0.16967
}

Semantic roles & 50–950 ramp

primary

#3F77A5

secondary

#BE9D82

accent

#8E53D4

background

#F8F9FB

surface

#EFF2F7

border

#CACCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3F77A5

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

Preview Lab → · Contrast checker → · Palette generator →