#3F9ED9#3F9ED9

#3F9ED9 is a light, vivid cyan. Relative luminance 0.305; OKLCH L 66.9% C 0.124 H 239.8°. Best body text is #000000 at 7.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F9ED9
RGB	rgb(63, 158, 217)
HSL	hsl(203, 67%, 55%)
HSV	hsv(203, 71%, 85%)
CMYK	cmyk(71%, 27.2%, 0%, 14.9%)
CIE-LAB	lab(62.10, -8.77, -38.05)
CIE-LCH	lch(62.10, 39.05, 257.02°)
OKLab	oklab(66.9% -0.0624 -0.1074)
OKLCH	oklch(66.9% 0.124 239.8)
XYZ	xyz(26.7963, 30.5172, 70.1104)
Luminance	0.3052 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9ED9 #D97A3F

analogous

#3FD9C7 #3F9ED9 #3F51D9

triadic

#3F9ED9 #D93F9E #9ED93F

tetradic

#3F9ED9 #C73FD9 #D97A3F #51D93F

square

#3F9ED9 #C73FD9 #D97A3F #51D93F

split-complementary

#3F9ED9 #D93F51 #D9C73F

monochromatic

#1A5B84 #247FB7 #3F9ED9 #72B8E3 #A5D2ED

Accessibility & contrast

On white

2.96

#3F9ED9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.10

#3F9ED9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3F9ED9

7.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9ED9	#FFFFFF	#000000	##000000
##3F9ED9	1.00	2.96	7.10	7.10
#FFFFFF	2.96	1.00	21.00	21.00
#000000	7.10	21.00	1.00	1.00
##000000	7.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#839EDC

Deuteranopia (green-blind)

#6D8FD8

Tritanopia (blue-blind)

#00ADB2

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #3f9ed9;
/* rgb */ color: rgb(63, 158, 217);
/* oklch */ color: oklch(66.9% 0.124 239.8);

Tailwind

colors: {
  custom: {
    50: '#86bae5',
    500: '#3f9ed9',
    950: '#000000',
  },
}

SCSS

$custom: #3f9ed9;
$custom-light: #86bae5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9ed9",
  "rgb": {
    "r": 63,
    "g": 158,
    "b": 217
  },
  "hsl": {
    "h": 202.987,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.66897,
    "c": 0.12419,
    "h": 239.8
  },
  "luminance": 0.3052
}

Semantic roles & 50–950 ramp

primary

#3F9ED9

secondary

#DAB29A

accent

#803EEA

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0D1115

muted

#7D8084

Preview Lab

Preview with #3F9ED9

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

Preview Lab → · Contrast checker → · Palette generator →