#3F77A4#3F77A4

#3F77A4 is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 55.1% C 0.092 H 244.8°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#3F77A4
RGB	rgb(63, 119, 164)
HSL	hsl(207, 44%, 45%)
HSV	hsv(207, 62%, 64%)
CMYK	cmyk(61.6%, 27.4%, 0%, 35.7%)
CIE-LAB	lab(48.17, -4.34, -29.64)
CIE-LCH	lch(48.17, 29.96, 261.67°)
OKLab	oklab(55.09% -0.0391 -0.0834)
OKLCH	oklch(55.09% 0.092 244.8)
XYZ	xyz(15.3451, 16.9293, 37.5738)
Luminance	0.1693 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77A4 #A46C3F

analogous

#3FA49F #3F77A4 #3F45A4

triadic

#3F77A4 #A43F77 #77A43F

tetradic

#3F77A4 #9F3FA4 #A46C3F #45A43F

square

#3F77A4 #9F3FA4 #A46C3F #45A43F

split-complementary

#3F77A4 #A43F45 #A49F3F

monochromatic

#1D374C #2E5778 #3F77A4 #5F95C1 #8BB3D2

Accessibility & contrast

On white

4.79

#3F77A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#3F77A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F77A4

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77A4	#FFFFFF	#000000	##FFFFFF
##3F77A4	1.00	4.79	4.39	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6378A6

Deuteranopia (green-blind)

#566EA3

Tritanopia (blue-blind)

#008287

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f77a4;
/* rgb */ color: rgb(63, 119, 164);
/* oklch */ color: oklch(55.1% 0.092 244.8);

Tailwind

colors: {
  custom: {
    50: '#7d9ebf',
    500: '#3f77a4',
    950: '#000000',
  },
}

SCSS

$custom: #3f77a4;
$custom-light: #7d9ebf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77a4",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 164
  },
  "hsl": {
    "h": 206.733,
    "s": 44.493,
    "l": 44.51
  },
  "oklch": {
    "l": 0.55093,
    "c": 0.09209,
    "h": 244.8
  },
  "luminance": 0.16931
}

Semantic roles & 50–950 ramp

primary

#3F77A4

secondary

#BD9C82

accent

#8D54D4

background

#F8F9FB

surface

#EFF2F7

border

#CACCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3F77A4

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

Preview Lab → · Contrast checker → · Palette generator →