#3F8ECB#3F8ECB

#3F8ECB is a light, vivid cyan. Relative luminance 0.247; OKLCH L 62.5% C 0.120 H 244.9°. Best body text is #000000 at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#3F8ECB
RGB	rgb(63, 142, 203)
HSL	hsl(206, 57%, 52%)
HSV	hsv(206, 69%, 80%)
CMYK	cmyk(69%, 30%, 0%, 20.4%)
CIE-LAB	lab(56.79, -4.47, -38.53)
CIE-LCH	lch(56.79, 38.79, 263.38°)
OKLab	oklab(62.49% -0.0511 -0.1089)
OKLCH	oklch(62.49% 0.12 244.9)
XYZ	xyz(22.4983, 24.7121, 60.0726)
Luminance	0.2472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8ECB #CB7C3F

analogous

#3FCBC2 #3F8ECB #3F48CB

triadic

#3F8ECB #CB3F8E #8ECB3F

tetradic

#3F8ECB #C23FCB #CB7C3F #48CB3F

square

#3F8ECB #C23FCB #CB7C3F #48CB3F

split-complementary

#3F8ECB #CB3F48 #CBC23F

monochromatic

#1F4D71 #2C6EA1 #3F8ECB #6FAAD8 #9FC7E5

Accessibility & contrast

On white

3.53

#3F8ECB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.94

#3F8ECB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8ECB

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8ECB	#FFFFFF	#000000	##000000
##3F8ECB	1.00	3.53	5.94	5.94
#FFFFFF	3.53	1.00	21.00	21.00
#000000	5.94	21.00	1.00	1.00
##000000	5.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7390CE

Deuteranopia (green-blind)

#5F82CA

Tritanopia (blue-blind)

#009DA3

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3f8ecb;
/* rgb */ color: rgb(63, 142, 203);
/* oklch */ color: oklch(62.5% 0.120 244.9);

Tailwind

colors: {
  custom: {
    50: '#84aedb',
    500: '#3f8ecb',
    950: '#000000',
  },
}

SCSS

$custom: #3f8ecb;
$custom-light: #84aedb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8ecb",
  "rgb": {
    "r": 63,
    "g": 142,
    "b": 203
  },
  "hsl": {
    "h": 206.143,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.62492,
    "c": 0.1203,
    "h": 244.9
  },
  "luminance": 0.24715
}

Semantic roles & 50–950 ramp

primary

#3F8ECB

secondary

#D1AF94

accent

#8A47E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F8ECB

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

Preview Lab → · Contrast checker → · Palette generator →