#3F8CBC#3F8CBC

#3F8CBC is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 61.3% C 0.105 H 239.1°. Best body text is #000000 at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F8CBC
RGB	rgb(63, 140, 188)
HSL	hsl(203, 50%, 49%)
HSV	hsv(203, 66%, 74%)
CMYK	cmyk(66.5%, 25.5%, 0%, 26.3%)
CIE-LAB	lab(55.52, -8.43, -32.02)
CIE-LCH	lch(55.52, 33.11, 255.24°)
OKLab	oklab(61.26% -0.0538 -0.0901)
OKLCH	oklch(61.26% 0.105 239.1)
XYZ	xyz(20.5016, 23.4416, 51.0114)
Luminance	0.2344 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8CBC #BC6F3F

analogous

#3FBCAE #3F8CBC #3F4EBC

triadic

#3F8CBC #BC3F8C #8CBC3F

tetradic

#3F8CBC #AE3FBC #BC6F3F #4EBC3F

square

#3F8CBC #AE3FBC #BC6F3F #4EBC3F

split-complementary

#3F8CBC #BC3F4E #BCAE3F

monochromatic

#204860 #306A8E #3F8CBC #6BA8CD #99C3DD

Accessibility & contrast

On white

3.69

#3F8CBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.69

#3F8CBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8CBC

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8CBC	#FFFFFF	#000000	##000000
##3F8CBC	1.00	3.69	5.69	5.69
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.69	21.00	1.00	1.00
##000000	5.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#768CBE

Deuteranopia (green-blind)

#6580BB

Tritanopia (blue-blind)

#00989C

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #3f8cbc;
/* rgb */ color: rgb(63, 140, 188);
/* oklch */ color: oklch(61.3% 0.105 239.1);

Tailwind

colors: {
  custom: {
    50: '#81add0',
    500: '#3f8cbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f8cbc;
$custom-light: #81add0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8cbc",
  "rgb": {
    "r": 63,
    "g": 140,
    "b": 188
  },
  "hsl": {
    "h": 203.04,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.61264,
    "c": 0.10493,
    "h": 239.1
  },
  "luminance": 0.23444
}

Semantic roles & 50–950 ramp

primary

#3F8CBC

secondary

#C9A58E

accent

#844ED9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3F8CBC

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

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