#3F8BCF#3F8BCF

#3F8BCF is a light, vivid cyan. Relative luminance 0.240; OKLCH L 62.0% C 0.128 H 248.4°. Best body text is #000000 at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F8BCF
RGB	rgb(63, 139, 207)
HSL	hsl(208, 60%, 53%)
HSV	hsv(208, 70%, 81%)
CMYK	cmyk(69.6%, 32.9%, 0%, 18.8%)
CIE-LAB	lab(56.11, -1.34, -41.86)
CIE-LCH	lch(56.11, 41.88, 268.17°)
OKLab	oklab(62.02% -0.047 -0.1186)
OKLCH	oklch(62.02% 0.128 248.4)
XYZ	xyz(22.5408, 24.0246, 62.4686)
Luminance	0.2403 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8BCF #CF833F

analogous

#3FCFCB #3F8BCF #3F43CF

triadic

#3F8BCF #CF3F8B #8BCF3F

tetradic

#3F8BCF #CB3FCF #CF833F #43CF3F

square

#3F8BCF #CB3FCF #CF833F #43CF3F

split-complementary

#3F8BCF #CF3F43 #CFCB3F

monochromatic

#1E4C76 #2A6CA7 #3F8BCF #70A9DB #A1C6E7

Accessibility & contrast

On white

3.62

#3F8BCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.81

#3F8BCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8BCF

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8BCF	#FFFFFF	#000000	##000000
##3F8BCF	1.00	3.62	5.81	5.81
#FFFFFF	3.62	1.00	21.00	21.00
#000000	5.81	21.00	1.00	1.00
##000000	5.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D8ED2

Deuteranopia (green-blind)

#5880CE

Tritanopia (blue-blind)

#009BA3

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3f8bcf;
/* rgb */ color: rgb(63, 139, 207);
/* oklch */ color: oklch(62.0% 0.128 248.4);

Tailwind

colors: {
  custom: {
    50: '#84acde',
    500: '#3f8bcf',
    950: '#000000',
  },
}

SCSS

$custom: #3f8bcf;
$custom-light: #84acde;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8bcf",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 207
  },
  "hsl": {
    "h": 208.333,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.62018,
    "c": 0.12761,
    "h": 248.4
  },
  "luminance": 0.24027
}

Semantic roles & 50–950 ramp

primary

#3F8BCF

secondary

#D4B396

accent

#8F45E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F8BCF

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

Preview Lab → · Contrast checker → · Palette generator →