#3F77C5#3F77C5

#3F77C5 is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.9% C 0.135 H 257.1°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F77C5
RGB	rgb(63, 119, 197)
HSL	hsl(215, 54%, 51%)
HSV	hsv(215, 68%, 77%)
CMYK	cmyk(68%, 39.6%, 0%, 22.7%)
CIE-LAB	lab(49.83, 7.15, -46.12)
CIE-LCH	lch(49.83, 46.67, 278.81°)
OKLab	oklab(56.94% -0.03 -0.1314)
OKLCH	oklch(56.94% 0.135 257.1)
XYZ	xyz(18.7211, 18.2797, 55.3542)
Luminance	0.1828 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77C5 #C58D3F

analogous

#3FBAC5 #3F77C5 #4A3FC5

triadic

#3F77C5 #C53F77 #77C53F

tetradic

#3F77C5 #C53FBA #C58D3F #3FC54A

square

#3F77C5 #C53FBA #C58D3F #3FC54A

split-complementary

#3F77C5 #C54A3F #BAC53F

monochromatic

#203F6A #2E5B99 #3F77C5 #6E98D3 #9DBAE1

Accessibility & contrast

On white

4.51

#3F77C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#3F77C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F77C5

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77C5	#FFFFFF	#000000	##000000
##3F77C5	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#537DC8

Deuteranopia (green-blind)

#3F71C3

Tritanopia (blue-blind)

#008994

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f77c5;
/* rgb */ color: rgb(63, 119, 197);
/* oklch */ color: oklch(56.9% 0.135 257.1);

Tailwind

colors: {
  custom: {
    50: '#829dd7',
    500: '#3f77c5',
    950: '#000000',
  },
}

SCSS

$custom: #3f77c5;
$custom-light: #829dd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77c5",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 197
  },
  "hsl": {
    "h": 214.925,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.56939,
    "c": 0.13477,
    "h": 257.1
  },
  "luminance": 0.18282
}

Semantic roles & 50–950 ramp

primary

#3F77C5

secondary

#CEB592

accent

#A04BDD

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #3F77C5

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

Preview Lab → · Contrast checker → · Palette generator →