#3F9FC9#3F9FC9

#3F9FC9 is a light, moderate cyan. Relative luminance 0.301; OKLCH L 66.4% C 0.108 H 230.5°. Best body text is #000000 at 7.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F9FC9
RGB	rgb(63, 159, 201)
HSL	hsl(198, 56%, 52%)
HSV	hsv(198, 69%, 79%)
CMYK	cmyk(68.7%, 20.9%, 0%, 21.2%)
CIE-LAB	lab(61.71, -14.67, -29.74)
CIE-LCH	lch(61.71, 33.16, 243.75°)
OKLab	oklab(66.37% -0.0688 -0.0834)
OKLCH	oklch(66.37% 0.108 230.5)
XYZ	xyz(24.9865, 30.0673, 59.7337)
Luminance	0.3007 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9FC9 #C9693F

analogous

#3FC9AE #3F9FC9 #3F5AC9

triadic

#3F9FC9 #C93F9F #9FC93F

tetradic

#3F9FC9 #AE3FC9 #C9693F #5AC93F

square

#3F9FC9 #AE3FC9 #C9693F #5AC93F

split-complementary

#3F9FC9 #C93F5A #C9AE3F

monochromatic

#1F566F #2D7C9E #3F9FC9 #6FB7D6 #9FCFE4

Accessibility & contrast

On white

2.99

#3F9FC9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.01

#3F9FC9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3F9FC9

7.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9FC9	#FFFFFF	#000000	##000000
##3F9FC9	1.00	2.99	7.01	7.01
#FFFFFF	2.99	1.00	21.00	21.00
#000000	7.01	21.00	1.00	1.00
##000000	7.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A9DCB

Deuteranopia (green-blind)

#778FC8

Tritanopia (blue-blind)

#00ABAD

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #3f9fc9;
/* rgb */ color: rgb(63, 159, 201);
/* oklch */ color: oklch(66.4% 0.108 230.5);

Tailwind

colors: {
  custom: {
    50: '#84bbd9',
    500: '#3f9fc9',
    950: '#000000',
  },
}

SCSS

$custom: #3f9fc9;
$custom-light: #84bbd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9fc9",
  "rgb": {
    "r": 63,
    "g": 159,
    "b": 201
  },
  "hsl": {
    "h": 198.261,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.66367,
    "c": 0.10811,
    "h": 230.5
  },
  "luminance": 0.3007
}

Semantic roles & 50–950 ramp

primary

#3F9FC9

secondary

#D0A694

accent

#7648DF

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #3F9FC9

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

Preview Lab → · Contrast checker → · Palette generator →