#3F8FB7#3F8FB7

#3F8FB7 is a mid, moderate cyan. Relative luminance 0.241; OKLCH L 61.7% C 0.098 H 233.3°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#3F8FB7
RGB	rgb(63, 143, 183)
HSL	hsl(200, 49%, 48%)
HSV	hsv(200, 66%, 72%)
CMYK	cmyk(65.6%, 21.9%, 0%, 28.2%)
CIE-LAB	lab(56.21, -11.79, -28.11)
CIE-LCH	lch(56.21, 30.48, 247.25°)
OKLab	oklab(61.73% -0.0587 -0.0788)
OKLCH	oklch(61.73% 0.098 233.3)
XYZ	xyz(20.4163, 24.1184, 48.3699)
Luminance	0.2412 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8FB7 #B7673F

analogous

#3FB7A3 #3F8FB7 #3F53B7

triadic

#3F8FB7 #B73F8F #8FB73F

tetradic

#3F8FB7 #A33FB7 #B7673F #53B73F

square

#3F8FB7 #A33FB7 #B7673F #53B73F

split-complementary

#3F8FB7 #B73F53 #B7A33F

monochromatic

#20485C #2F6B89 #3F8FB7 #68AACB #96C4DB

Accessibility & contrast

On white

3.61

#3F8FB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#3F8FB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8FB7

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8FB7	#FFFFFF	#000000	##000000
##3F8FB7	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8EB9

Deuteranopia (green-blind)

#6B81B6

Tritanopia (blue-blind)

#009A9C

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3f8fb7;
/* rgb */ color: rgb(63, 143, 183);
/* oklch */ color: oklch(61.7% 0.098 233.3);

Tailwind

colors: {
  custom: {
    50: '#81afcc',
    500: '#3f8fb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f8fb7;
$custom-light: #81afcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8fb7",
  "rgb": {
    "r": 63,
    "g": 143,
    "b": 183
  },
  "hsl": {
    "h": 200,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.61735,
    "c": 0.09828,
    "h": 233.3
  },
  "luminance": 0.24121
}

Semantic roles & 50–950 ramp

primary

#3F8FB7

secondary

#C69F8B

accent

#7D4FD8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F8FB7

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

Preview Lab → · Contrast checker → · Palette generator →