#3F8BCC#3F8BCC

#3F8BCC is a mid, vivid cyan. Relative luminance 0.239; OKLCH L 61.9% C 0.124 H 247.3°. Best body text is #000000 at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F8BCC
RGB	rgb(63, 139, 204)
HSL	hsl(208, 58%, 52%)
HSV	hsv(208, 69%, 80%)
CMYK	cmyk(69.1%, 31.9%, 0%, 20%)
CIE-LAB	lab(55.97, -2.38, -40.39)
CIE-LCH	lch(55.97, 40.46, 266.62°)
OKLab	oklab(61.86% -0.0478 -0.1144)
OKLCH	oklch(61.86% 0.124 247.3)
XYZ	xyz(22.1775, 23.8793, 60.5554)
Luminance	0.2388 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8BCC #CC803F

analogous

#3FCCC7 #3F8BCC #3F44CC

triadic

#3F8BCC #CC3F8B #8BCC3F

tetradic

#3F8BCC #C73FCC #CC803F #44CC3F

square

#3F8BCC #C73FCC #CC803F #44CC3F

split-complementary

#3F8BCC #CC3F44 #CCC73F

monochromatic

#1E4C72 #2B6CA3 #3F8BCC #6FA8D9 #A0C5E6

Accessibility & contrast

On white

3.64

#3F8BCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.78

#3F8BCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8BCC

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8BCC	#FFFFFF	#000000	##000000
##3F8BCC	1.00	3.64	5.78	5.78
#FFFFFF	3.64	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)

#6E8ECF

Deuteranopia (green-blind)

#5A80CB

Tritanopia (blue-blind)

#009BA2

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3f8bcc;
/* rgb */ color: rgb(63, 139, 204);
/* oklch */ color: oklch(61.9% 0.124 247.3);

Tailwind

colors: {
  custom: {
    50: '#84acdc',
    500: '#3f8bcc',
    950: '#000000',
  },
}

SCSS

$custom: #3f8bcc;
$custom-light: #84acdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8bcc",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 204
  },
  "hsl": {
    "h": 207.66,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.61855,
    "c": 0.12397,
    "h": 247.3
  },
  "luminance": 0.23882
}

Semantic roles & 50–950 ramp

primary

#3F8BCC

secondary

#D2B195

accent

#8E47E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F8BCC

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

Preview Lab → · Contrast checker → · Palette generator →