#3F8FB0#3F8FB0

#3F8FB0 is a mid, moderate cyan. Relative luminance 0.238; OKLCH L 61.4% C 0.092 H 228.2°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F8FB0
RGB	rgb(63, 143, 176)
HSL	hsl(198, 47%, 47%)
HSV	hsv(198, 64%, 69%)
CMYK	cmyk(64.2%, 18.7%, 0%, 31%)
CIE-LAB	lab(55.92, -14.08, -24.56)
CIE-LCH	lch(55.92, 28.31, 240.18°)
OKLab	oklab(61.41% -0.0613 -0.0686)
OKLCH	oklch(61.41% 0.092 228.2)
XYZ	xyz(19.7057, 23.8342, 44.6278)
Luminance	0.2384 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8FB0 #B0603F

analogous

#3FB099 #3F8FB0 #3F57B0

triadic

#3F8FB0 #B03F8F #8FB03F

tetradic

#3F8FB0 #993FB0 #B0603F #57B03F

square

#3F8FB0 #993FB0 #B0603F #57B03F

split-complementary

#3F8FB0 #B03F57 #B0993F

monochromatic

#1F4656 #2F6A83 #3F8FB0 #65ABC8 #92C3D8

Accessibility & contrast

On white

3.64

#3F8FB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#3F8FB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8FB0

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8FB0	#FFFFFF	#000000	##000000
##3F8FB0	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8DB2

Deuteranopia (green-blind)

#6E81B0

Tritanopia (blue-blind)

#00989A

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3f8fb0;
/* rgb */ color: rgb(63, 143, 176);
/* oklch */ color: oklch(61.4% 0.092 228.2);

Tailwind

colors: {
  custom: {
    50: '#80afc7',
    500: '#3f8fb0',
    950: '#000000',
  },
}

SCSS

$custom: #3f8fb0;
$custom-light: #80afc7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8fb0",
  "rgb": {
    "r": 63,
    "g": 143,
    "b": 176
  },
  "hsl": {
    "h": 197.522,
    "s": 47.28,
    "l": 46.863
  },
  "oklch": {
    "l": 0.61414,
    "c": 0.09202,
    "h": 228.2
  },
  "luminance": 0.23836
}

Semantic roles & 50–950 ramp

primary

#3F8FB0

secondary

#C39988

accent

#7851D7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F8FB0

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

Preview Lab → · Contrast checker → · Palette generator →