#3F99CF#3F99CF

#3F99CF is a light, moderate cyan. Relative luminance 0.283; OKLCH L 65.2% C 0.117 H 238.7°. Best body text is #000000 at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F99CF
RGB	rgb(63, 153, 207)
HSL	hsl(203, 60%, 53%)
HSV	hsv(203, 70%, 81%)
CMYK	cmyk(69.6%, 26.1%, 0%, 18.8%)
CIE-LAB	lab(60.20, -9.36, -35.45)
CIE-LCH	lch(60.20, 36.67, 255.21°)
OKLab	oklab(65.24% -0.0607 -0.0999)
OKLCH	oklch(65.24% 0.117 238.7)
XYZ	xyz(24.6992, 28.3415, 63.1881)
Luminance	0.2834 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99CF #CF753F

analogous

#3FCFBD #3F99CF #3F51CF

triadic

#3F99CF #CF3F99 #99CF3F

tetradic

#3F99CF #BD3FCF #CF753F #51CF3F

square

#3F99CF #BD3FCF #CF753F #51CF3F

split-complementary

#3F99CF #CF3F51 #CFBD3F

monochromatic

#1E5576 #2A78A7 #3F99CF #70B3DB #A1CDE7

Accessibility & contrast

On white

3.15

#3F99CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.67

#3F99CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99CF

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99CF	#FFFFFF	#000000	##000000
##3F99CF	1.00	3.15	6.67	6.67
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.67	21.00	1.00	1.00
##000000	6.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8099D1

Deuteranopia (green-blind)

#6C8BCE

Tritanopia (blue-blind)

#00A7AC

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #3f99cf;
/* rgb */ color: rgb(63, 153, 207);
/* oklch */ color: oklch(65.2% 0.117 238.7);

Tailwind

colors: {
  custom: {
    50: '#85b6de',
    500: '#3f99cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f99cf;
$custom-light: #85b6de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99cf",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 207
  },
  "hsl": {
    "h": 202.5,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.65244,
    "c": 0.1169,
    "h": 238.7
  },
  "luminance": 0.28344
}

Semantic roles & 50–950 ramp

primary

#3F99CF

secondary

#D4AD96

accent

#8045E3

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3F99CF

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

Preview Lab → · Contrast checker → · Palette generator →