#3F99CC#3F99CC

#3F99CC is a light, moderate cyan. Relative luminance 0.282; OKLCH L 65.1% C 0.114 H 237.2°. Best body text is #000000 at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F99CC
RGB	rgb(63, 153, 204)
HSL	hsl(202, 58%, 52%)
HSV	hsv(202, 69%, 80%)
CMYK	cmyk(69.1%, 25%, 0%, 20%)
CIE-LAB	lab(60.07, -10.37, -33.97)
CIE-LCH	lch(60.07, 35.52, 253.02°)
OKLab	oklab(65.1% -0.0617 -0.0956)
OKLCH	oklch(65.1% 0.114 237.2)
XYZ	xyz(24.3360, 28.1962, 61.2749)
Luminance	0.2820 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99CC #CC723F

analogous

#3FCCB9 #3F99CC #3F53CC

triadic

#3F99CC #CC3F99 #99CC3F

tetradic

#3F99CC #B93FCC #CC723F #53CC3F

square

#3F99CC #B93FCC #CC723F #53CC3F

split-complementary

#3F99CC #CC3F53 #CCB93F

monochromatic

#1E5472 #2B77A3 #3F99CC #6FB3D9 #A0CCE6

Accessibility & contrast

On white

3.16

#3F99CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.64

#3F99CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99CC

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99CC	#FFFFFF	#000000	##000000
##3F99CC	1.00	3.16	6.64	6.64
#FFFFFF	3.16	1.00	21.00	21.00
#000000	6.64	21.00	1.00	1.00
##000000	6.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8198CE

Deuteranopia (green-blind)

#6E8BCB

Tritanopia (blue-blind)

#00A6AA

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #3f99cc;
/* rgb */ color: rgb(63, 153, 204);
/* oklch */ color: oklch(65.1% 0.114 237.2);

Tailwind

colors: {
  custom: {
    50: '#84b7db',
    500: '#3f99cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f99cc;
$custom-light: #84b7db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99cc",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 204
  },
  "hsl": {
    "h": 201.702,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.65097,
    "c": 0.11381,
    "h": 237.2
  },
  "luminance": 0.28199
}

Semantic roles & 50–950 ramp

primary

#3F99CC

secondary

#D2AB95

accent

#7F47E1

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3F99CC

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

Preview Lab → · Contrast checker → · Palette generator →