#3F99BE#3F99BE

#3F99BE is a light, moderate cyan. Relative luminance 0.276; OKLCH L 64.4% C 0.101 H 228.6°. Best body text is #000000 at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F99BE
RGB	rgb(63, 153, 190)
HSL	hsl(197, 50%, 50%)
HSV	hsv(197, 67%, 75%)
CMYK	cmyk(66.8%, 19.5%, 0%, 25.5%)
CIE-LAB	lab(59.48, -15.00, -27.01)
CIE-LCH	lch(59.48, 30.90, 240.95°)
OKLab	oklab(64.44% -0.0667 -0.0756)
OKLCH	oklch(64.44% 0.101 228.6)
XYZ	xyz(22.7317, 27.5545, 52.8258)
Luminance	0.2756 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99BE #BE643F

analogous

#3FBEA4 #3F99BE #3F5ABE

triadic

#3F99BE #BE3F99 #99BE3F

tetradic

#3F99BE #A43FBE #BE643F #5ABE3F

square

#3F99BE #A43FBE #BE643F #5ABE3F

split-complementary

#3F99BE #BE3F5A #BEA43F

monochromatic

#214F62 #307490 #3F99BE #6CB2CE #9ACADD

Accessibility & contrast

On white

3.23

#3F99BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.51

#3F99BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F99BE

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99BE	#FFFFFF	#000000	##000000
##3F99BE	1.00	3.23	6.51	6.51
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.51	21.00	1.00	1.00
##000000	6.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8697C0

Deuteranopia (green-blind)

#748ABE

Tritanopia (blue-blind)

#00A3A5

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #3f99be;
/* rgb */ color: rgb(63, 153, 190);
/* oklch */ color: oklch(64.4% 0.101 228.6);

Tailwind

colors: {
  custom: {
    50: '#82b7d1',
    500: '#3f99be',
    950: '#000000',
  },
}

SCSS

$custom: #3f99be;
$custom-light: #82b7d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99be",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 190
  },
  "hsl": {
    "h": 197.48,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.64442,
    "c": 0.10079,
    "h": 228.6
  },
  "luminance": 0.27557
}

Semantic roles & 50–950 ramp

primary

#3F99BE

secondary

#C9A08F

accent

#774EDA

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0C1114

muted

#7D8082

Preview Lab

Preview with #3F99BE

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

Preview Lab → · Contrast checker → · Palette generator →