#3F8ACB#3F8ACB

#3F8ACB is a mid, vivid cyan. Relative luminance 0.235; OKLCH L 61.6% C 0.124 H 247.6°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F8ACB
RGB	rgb(63, 138, 203)
HSL	hsl(208, 57%, 52%)
HSV	hsv(208, 69%, 80%)
CMYK	cmyk(69%, 32%, 0%, 20.4%)
CIE-LAB	lab(55.63, -2.15, -40.36)
CIE-LCH	lch(55.63, 40.42, 266.96°)
OKLab	oklab(61.57% -0.0471 -0.1143)
OKLCH	oklch(61.57% 0.124 247.6)
XYZ	xyz(21.9138, 23.5432, 59.8777)
Luminance	0.2355 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8ACB #CB803F

analogous

#3FCBC6 #3F8ACB #3F44CB

triadic

#3F8ACB #CB3F8A #8ACB3F

tetradic

#3F8ACB #C63FCB #CB803F #44CB3F

square

#3F8ACB #C63FCB #CB803F #44CB3F

split-complementary

#3F8ACB #CB3F44 #CBC63F

monochromatic

#1F4B71 #2C6BA1 #3F8ACB #6FA7D8 #9FC5E5

Accessibility & contrast

On white

3.68

#3F8ACB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#3F8ACB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8ACB

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8ACB	#FFFFFF	#000000	##000000
##3F8ACB	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D8DCE

Deuteranopia (green-blind)

#597FCA

Tritanopia (blue-blind)

#0099A1

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #3f8acb;
/* rgb */ color: rgb(63, 138, 203);
/* oklch */ color: oklch(61.6% 0.124 247.6);

Tailwind

colors: {
  custom: {
    50: '#84abdb',
    500: '#3f8acb',
    950: '#000000',
  },
}

SCSS

$custom: #3f8acb;
$custom-light: #84abdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8acb",
  "rgb": {
    "r": 63,
    "g": 138,
    "b": 203
  },
  "hsl": {
    "h": 207.857,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.61573,
    "c": 0.12363,
    "h": 247.6
  },
  "luminance": 0.23546
}

Semantic roles & 50–950 ramp

primary

#3F8ACB

secondary

#D1B194

accent

#8E47E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F8ACB

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

Preview Lab → · Contrast checker → · Palette generator →