#3F8BCB#3F8BCB

#3F8BCB is a mid, vivid cyan. Relative luminance 0.238; OKLCH L 61.8% C 0.123 H 246.9°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F8BCB
RGB	rgb(63, 139, 203)
HSL	hsl(207, 57%, 52%)
HSV	hsv(207, 69%, 80%)
CMYK	cmyk(69%, 31.5%, 0%, 20.4%)
CIE-LAB	lab(55.92, -2.73, -39.90)
CIE-LCH	lch(55.92, 40.00, 266.09°)
OKLab	oklab(61.8% -0.0481 -0.113)
OKLCH	oklch(61.8% 0.123 246.9)
XYZ	xyz(22.0579, 23.8314, 59.9258)
Luminance	0.2383 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8BCB #CB7F3F

analogous

#3FCBC5 #3F8BCB #3F45CB

triadic

#3F8BCB #CB3F8B #8BCB3F

tetradic

#3F8BCB #C53FCB #CB7F3F #45CB3F

square

#3F8BCB #C53FCB #CB7F3F #45CB3F

split-complementary

#3F8BCB #CB3F45 #CBC53F

monochromatic

#1F4B71 #2C6BA1 #3F8BCB #6FA8D8 #9FC5E5

Accessibility & contrast

On white

3.64

#3F8BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#3F8BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8BCB

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8BCB	#FFFFFF	#000000	##000000
##3F8BCB	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E8DCE

Deuteranopia (green-blind)

#5B80CA

Tritanopia (blue-blind)

#009AA2

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3f8bcb;
/* rgb */ color: rgb(63, 139, 203);
/* oklch */ color: oklch(61.8% 0.123 246.9);

Tailwind

colors: {
  custom: {
    50: '#84acdb',
    500: '#3f8bcb',
    950: '#000000',
  },
}

SCSS

$custom: #3f8bcb;
$custom-light: #84acdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8bcb",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 203
  },
  "hsl": {
    "h": 207.429,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.61802,
    "c": 0.12278,
    "h": 246.9
  },
  "luminance": 0.23834
}

Semantic roles & 50–950 ramp

primary

#3F8BCB

secondary

#D1B094

accent

#8D47E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F8BCB

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

Preview Lab → · Contrast checker → · Palette generator →