#3F91B2#3F91B2

#3F91B2 is a mid, moderate cyan. Relative luminance 0.245; OKLCH L 62.0% C 0.093 H 227.7°. Best body text is #000000 at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F91B2
RGB	rgb(63, 145, 178)
HSL	hsl(197, 48%, 47%)
HSV	hsv(197, 65%, 70%)
CMYK	cmyk(64.6%, 18.5%, 0%, 30.2%)
CIE-LAB	lab(56.60, -14.53, -24.65)
CIE-LCH	lch(56.60, 28.61, 239.49°)
OKLab	oklab(61.99% -0.0627 -0.0689)
OKLCH	oklch(61.99% 0.093 227.7)
XYZ	xyz(20.2080, 24.5198, 45.7787)
Luminance	0.2452 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91B2 #B2603F

analogous

#3FB299 #3F91B2 #3F58B2

triadic

#3F91B2 #B23F91 #91B23F

tetradic

#3F91B2 #993FB2 #B2603F #58B23F

square

#3F91B2 #993FB2 #B2603F #58B23F

split-complementary

#3F91B2 #B23F58 #B2993F

monochromatic

#1F4758 #2F6C85 #3F91B2 #66ACC9 #93C5D9

Accessibility & contrast

On white

3.56

#3F91B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.90

#3F91B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91B2

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91B2	#FFFFFF	#000000	##000000
##3F91B2	1.00	3.56	5.90	5.90
#FFFFFF	3.56	1.00	21.00	21.00
#000000	5.90	21.00	1.00	1.00
##000000	5.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808EB4

Deuteranopia (green-blind)

#6F83B2

Tritanopia (blue-blind)

#009A9C

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3f91b2;
/* rgb */ color: rgb(63, 145, 178);
/* oklch */ color: oklch(62.0% 0.093 227.7);

Tailwind

colors: {
  custom: {
    50: '#80b1c9',
    500: '#3f91b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f91b2;
$custom-light: #80b1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91b2",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 178
  },
  "hsl": {
    "h": 197.217,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.61985,
    "c": 0.09314,
    "h": 227.7
  },
  "luminance": 0.24522
}

Semantic roles & 50–950 ramp

primary

#3F91B2

secondary

#C49A89

accent

#7750D7

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F91B2

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

Preview Lab → · Contrast checker → · Palette generator →