#3F8FB3#3F8FB3

#3F8FB3 is a mid, moderate cyan. Relative luminance 0.240; OKLCH L 61.6% C 0.095 H 230.5°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#3F8FB3
RGB	rgb(63, 143, 179)
HSL	hsl(199, 48%, 47%)
HSV	hsv(199, 65%, 70%)
CMYK	cmyk(64.8%, 20.1%, 0%, 29.8%)
CIE-LAB	lab(56.04, -13.10, -26.09)
CIE-LCH	lch(56.04, 29.19, 243.33°)
OKLab	oklab(61.55% -0.0602 -0.073)
OKLCH	oklch(61.55% 0.095 230.5)
XYZ	xyz(20.0058, 23.9543, 46.2084)
Luminance	0.2396 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8FB3 #B3633F

analogous

#3FB39D #3F8FB3 #3F55B3

triadic

#3F8FB3 #B33F8F #8FB33F

tetradic

#3F8FB3 #9D3FB3 #B3633F #55B33F

square

#3F8FB3 #9D3FB3 #B3633F #55B33F

split-complementary

#3F8FB3 #B33F55 #B39D3F

monochromatic

#1F4758 #2F6B86 #3F8FB3 #66AAC9 #93C3D9

Accessibility & contrast

On white

3.63

#3F8FB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.79

#3F8FB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8FB3

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8FB3	#FFFFFF	#000000	##000000
##3F8FB3	1.00	3.63	5.79	5.79
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.79	21.00	1.00	1.00
##000000	5.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8DB5

Deuteranopia (green-blind)

#6D81B2

Tritanopia (blue-blind)

#00999B

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3f8fb3;
/* rgb */ color: rgb(63, 143, 179);
/* oklch */ color: oklch(61.6% 0.095 230.5);

Tailwind

colors: {
  custom: {
    50: '#80afca',
    500: '#3f8fb3',
    950: '#000000',
  },
}

SCSS

$custom: #3f8fb3;
$custom-light: #80afca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8fb3",
  "rgb": {
    "r": 63,
    "g": 143,
    "b": 179
  },
  "hsl": {
    "h": 198.621,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.6155,
    "c": 0.0946,
    "h": 230.5
  },
  "luminance": 0.23956
}

Semantic roles & 50–950 ramp

primary

#3F8FB3

secondary

#C49C89

accent

#7A50D8

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F8FB3

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

Preview Lab → · Contrast checker → · Palette generator →