#3F9FD9#3F9FD9

#3F9FD9 is a light, vivid cyan. Relative luminance 0.309; OKLCH L 67.1% C 0.124 H 239.1°. Best body text is #000000 at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#3F9FD9
RGB	rgb(63, 159, 217)
HSL	hsl(203, 67%, 55%)
HSV	hsv(203, 71%, 85%)
CMYK	cmyk(71%, 26.7%, 0%, 14.9%)
CIE-LAB	lab(62.39, -9.33, -37.60)
CIE-LCH	lch(62.39, 38.74, 256.06°)
OKLab	oklab(67.13% -0.0633 -0.106)
OKLCH	oklch(67.13% 0.124 239.1)
XYZ	xyz(26.9675, 30.8598, 70.1675)
Luminance	0.3086 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9FD9 #D9793F

analogous

#3FD9C6 #3F9FD9 #3F52D9

triadic

#3F9FD9 #D93F9F #9FD93F

tetradic

#3F9FD9 #C63FD9 #D9793F #52D93F

square

#3F9FD9 #C63FD9 #D9793F #52D93F

split-complementary

#3F9FD9 #D93F52 #D9C63F

monochromatic

#1A5C84 #247FB7 #3F9FD9 #72B9E3 #A5D2ED

Accessibility & contrast

On white

2.93

#3F9FD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.17

#3F9FD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3F9FD9

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9FD9	#FFFFFF	#000000	##000000
##3F9FD9	1.00	2.93	7.17	7.17
#FFFFFF	2.93	1.00	21.00	21.00
#000000	7.17	21.00	1.00	1.00
##000000	7.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#849FDC

Deuteranopia (green-blind)

#6F90D8

Tritanopia (blue-blind)

#00AEB3

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #3f9fd9;
/* rgb */ color: rgb(63, 159, 217);
/* oklch */ color: oklch(67.1% 0.124 239.1);

Tailwind

colors: {
  custom: {
    50: '#86bbe5',
    500: '#3f9fd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f9fd9;
$custom-light: #86bbe5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9fd9",
  "rgb": {
    "r": 63,
    "g": 159,
    "b": 217
  },
  "hsl": {
    "h": 202.597,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.67128,
    "c": 0.12353,
    "h": 239.1
  },
  "luminance": 0.30863
}

Semantic roles & 50–950 ramp

primary

#3F9FD9

secondary

#DAB29A

accent

#7F3EEA

background

#F8FBFE

surface

#F0F6FC

border

#CBD0D5

text

#0D1115

muted

#7D8084

Preview Lab

Preview with #3F9FD9

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

Preview Lab → · Contrast checker → · Palette generator →