#3F8FB2#3F8FB2

#3F8FB2 is a mid, moderate cyan. Relative luminance 0.239; OKLCH L 61.5% C 0.094 H 229.8°. Best body text is #000000 at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F8FB2
RGB	rgb(63, 143, 178)
HSL	hsl(198, 48%, 47%)
HSV	hsv(198, 65%, 70%)
CMYK	cmyk(64.6%, 19.7%, 0%, 30.2%)
CIE-LAB	lab(56.00, -13.43, -25.58)
CIE-LCH	lch(56.00, 28.89, 242.30°)
OKLab	oklab(61.5% -0.0605 -0.0715)
OKLCH	oklch(61.5% 0.094 229.8)
XYZ	xyz(19.9051, 23.9140, 45.6777)
Luminance	0.2392 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8FB2 #B2623F

analogous

#3FB29C #3F8FB2 #3F55B2

triadic

#3F8FB2 #B23F8F #8FB23F

tetradic

#3F8FB2 #9C3FB2 #B2623F #55B23F

square

#3F8FB2 #9C3FB2 #B2623F #55B23F

split-complementary

#3F8FB2 #B23F55 #B29C3F

monochromatic

#1F4658 #2F6B85 #3F8FB2 #66ABC9 #93C3D9

Accessibility & contrast

On white

3.63

#3F8FB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.78

#3F8FB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8FB2

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8FB2	#FFFFFF	#000000	##000000
##3F8FB2	1.00	3.63	5.78	5.78
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.78	21.00	1.00	1.00
##000000	5.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8DB4

Deuteranopia (green-blind)

#6D81B2

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3f8fb2;
/* rgb */ color: rgb(63, 143, 178);
/* oklch */ color: oklch(61.5% 0.094 229.8);

Tailwind

colors: {
  custom: {
    50: '#80afc9',
    500: '#3f8fb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f8fb2;
$custom-light: #80afc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8fb2",
  "rgb": {
    "r": 63,
    "g": 143,
    "b": 178
  },
  "hsl": {
    "h": 198.261,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.61504,
    "c": 0.09372,
    "h": 229.8
  },
  "luminance": 0.23916
}

Semantic roles & 50–950 ramp

primary

#3F8FB2

secondary

#C49B89

accent

#7A50D7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F8FB2

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

Preview Lab → · Contrast checker → · Palette generator →