#3F9ECB#3F9ECB

#3F9ECB is a light, moderate cyan. Relative luminance 0.298; OKLCH L 66.2% C 0.110 H 232.5°. Best body text is #000000 at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F9ECB
RGB	rgb(63, 158, 203)
HSL	hsl(199, 57%, 52%)
HSV	hsv(199, 69%, 80%)
CMYK	cmyk(69%, 22.2%, 0%, 20.4%)
CIE-LAB	lab(61.50, -13.46, -31.19)
CIE-LCH	lch(61.50, 33.97, 246.65°)
OKLab	oklab(66.22% -0.0671 -0.0875)
OKLCH	oklch(66.22% 0.11 232.5)
XYZ	xyz(25.0520, 29.8195, 60.9238)
Luminance	0.2982 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9ECB #CB6C3F

analogous

#3FCBB2 #3F9ECB #3F58CB

triadic

#3F9ECB #CB3F9E #9ECB3F

tetradic

#3F9ECB #B23FCB #CB6C3F #58CB3F

square

#3F9ECB #B23FCB #CB6C3F #58CB3F

split-complementary

#3F9ECB #CB3F58 #CBB23F

monochromatic

#1F5771 #2C7BA1 #3F9ECB #6FB6D8 #9FCFE5

Accessibility & contrast

On white

3.02

#3F9ECB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.96

#3F9ECB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9ECB

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9ECB	#FFFFFF	#000000	##000000
##3F9ECB	1.00	3.02	6.96	6.96
#FFFFFF	3.02	1.00	21.00	21.00
#000000	6.96	21.00	1.00	1.00
##000000	6.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#889CCD

Deuteranopia (green-blind)

#758ECA

Tritanopia (blue-blind)

#00AAAD

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #3f9ecb;
/* rgb */ color: rgb(63, 158, 203);
/* oklch */ color: oklch(66.2% 0.110 232.5);

Tailwind

colors: {
  custom: {
    50: '#84badb',
    500: '#3f9ecb',
    950: '#000000',
  },
}

SCSS

$custom: #3f9ecb;
$custom-light: #84badb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9ecb",
  "rgb": {
    "r": 63,
    "g": 158,
    "b": 203
  },
  "hsl": {
    "h": 199.286,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.66223,
    "c": 0.1103,
    "h": 232.5
  },
  "luminance": 0.29822
}

Semantic roles & 50–950 ramp

primary

#3F9ECB

secondary

#D1A894

accent

#7847E1

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3F9ECB

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

Preview Lab → · Contrast checker → · Palette generator →