#3F9BB2#3F9BB2

#3F9BB2 is a light, moderate cyan. Relative luminance 0.277; OKLCH L 64.4% C 0.092 H 217.2°. Best body text is #000000 at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BB2
RGB	rgb(63, 155, 178)
HSL	hsl(192, 48%, 47%)
HSV	hsv(192, 65%, 70%)
CMYK	cmyk(64.6%, 12.9%, 0%, 30.2%)
CIE-LAB	lab(59.63, -19.90, -20.02)
CIE-LCH	lch(59.63, 28.22, 225.17°)
OKLab	oklab(64.41% -0.0734 -0.0557)
OKLCH	oklch(64.41% 0.092 217.2)
XYZ	xyz(21.8038, 27.7115, 46.3106)
Luminance	0.2771 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BB2 #B2563F

analogous

#3FB290 #3F9BB2 #3F62B2

triadic

#3F9BB2 #B23F9B #9BB23F

tetradic

#3F9BB2 #903FB2 #B2563F #62B23F

square

#3F9BB2 #903FB2 #B2563F #62B23F

split-complementary

#3F9BB2 #B23F62 #B2903F

monochromatic

#1F4C58 #2F7485 #3F9BB2 #66B5C9 #93CBD9

Accessibility & contrast

On white

3.21

#3F9BB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.54

#3F9BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BB2

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BB2	#FFFFFF	#000000	##000000
##3F9BB2	1.00	3.21	6.54	6.54
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.54	21.00	1.00	1.00
##000000	6.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C97B3

Deuteranopia (green-blind)

#7B8AB2

Tritanopia (blue-blind)

#00A3A2

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #3f9bb2;
/* rgb */ color: rgb(63, 155, 178);
/* oklch */ color: oklch(64.4% 0.092 217.2);

Tailwind

colors: {
  custom: {
    50: '#81b8c9',
    500: '#3f9bb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f9bb2;
$custom-light: #81b8c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9bb2",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 178
  },
  "hsl": {
    "h": 192,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.64405,
    "c": 0.09213,
    "h": 217.2
  },
  "luminance": 0.27714
}

Semantic roles & 50–950 ramp

primary

#3F9BB2

secondary

#C49589

accent

#6B50D7

background

#F8FBFC

surface

#F0F6F8

border

#CBD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3F9BB2

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

Preview Lab → · Contrast checker → · Palette generator →