#3F8CB3#3F8CB3

#3F8CB3 is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 60.8% C 0.096 H 233.5°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#3F8CB3
RGB	rgb(63, 140, 179)
HSL	hsl(200, 48%, 47%)
HSV	hsv(200, 65%, 70%)
CMYK	cmyk(64.8%, 21.8%, 0%, 29.8%)
CIE-LAB	lab(55.14, -11.43, -27.48)
CIE-LCH	lch(55.14, 29.76, 247.41°)
OKLab	oklab(60.83% -0.057 -0.077)
OKLCH	oklch(60.83% 0.096 233.5)
XYZ	xyz(19.5615, 23.0656, 46.0603)
Luminance	0.2307 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8CB3 #B3663F

analogous

#3FB3A0 #3F8CB3 #3F52B3

triadic

#3F8CB3 #B33F8C #8CB33F

tetradic

#3F8CB3 #A03FB3 #B3663F #52B33F

square

#3F8CB3 #A03FB3 #B3663F #52B33F

split-complementary

#3F8CB3 #B33F52 #B3A03F

monochromatic

#1F4558 #2F6986 #3F8CB3 #66A8C9 #93C2D9

Accessibility & contrast

On white

3.74

#3F8CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#3F8CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8CB3

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8CB3	#FFFFFF	#000000	##000000
##3F8CB3	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798BB5

Deuteranopia (green-blind)

#697FB2

Tritanopia (blue-blind)

#009699

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #3f8cb3;
/* rgb */ color: rgb(63, 140, 179);
/* oklch */ color: oklch(60.8% 0.096 233.5);

Tailwind

colors: {
  custom: {
    50: '#80adca',
    500: '#3f8cb3',
    950: '#000000',
  },
}

SCSS

$custom: #3f8cb3;
$custom-light: #80adca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8cb3",
  "rgb": {
    "r": 63,
    "g": 140,
    "b": 179
  },
  "hsl": {
    "h": 200.172,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.60832,
    "c": 0.09578,
    "h": 233.5
  },
  "luminance": 0.23068
}

Semantic roles & 50–950 ramp

primary

#3F8CB3

secondary

#C49D89

accent

#7E50D8

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F8CB3

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

Preview Lab → · Contrast checker → · Palette generator →