#3F91BC#3F91BC

#3F91BC is a light, moderate cyan. Relative luminance 0.249; OKLCH L 62.4% C 0.102 H 234.7°. Best body text is #000000 at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F91BC
RGB	rgb(63, 145, 188)
HSL	hsl(201, 50%, 49%)
HSV	hsv(201, 66%, 74%)
CMYK	cmyk(66.5%, 22.9%, 0%, 26.3%)
CIE-LAB	lab(57.01, -11.25, -29.70)
CIE-LCH	lch(57.01, 31.76, 249.25°)
OKLab	oklab(62.45% -0.059 -0.0834)
OKLCH	oklch(62.45% 0.102 234.7)
XYZ	xyz(21.2489, 24.9362, 51.2605)
Luminance	0.2494 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91BC #BC6A3F

analogous

#3FBCA9 #3F91BC #3F53BC

triadic

#3F91BC #BC3F91 #91BC3F

tetradic

#3F91BC #A93FBC #BC6A3F #53BC3F

square

#3F91BC #A93FBC #BC6A3F #53BC3F

split-complementary

#3F91BC #BC3F53 #BCA93F

monochromatic

#204A60 #306E8E #3F91BC #6BABCD #99C5DD

Accessibility & contrast

On white

3.51

#3F91BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.99

#3F91BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91BC

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91BC	#FFFFFF	#000000	##000000
##3F91BC	1.00	3.51	5.99	5.99
#FFFFFF	3.51	1.00	21.00	21.00
#000000	5.99	21.00	1.00	1.00
##000000	5.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C90BE

Deuteranopia (green-blind)

#6B83BB

Tritanopia (blue-blind)

#009C9F

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3f91bc;
/* rgb */ color: rgb(63, 145, 188);
/* oklch */ color: oklch(62.4% 0.102 234.7);

Tailwind

colors: {
  custom: {
    50: '#82b1d0',
    500: '#3f91bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f91bc;
$custom-light: #82b1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91bc",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 188
  },
  "hsl": {
    "h": 200.64,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.62446,
    "c": 0.10216,
    "h": 234.7
  },
  "luminance": 0.24938
}

Semantic roles & 50–950 ramp

primary

#3F91BC

secondary

#C9A28E

accent

#7E4ED9

background

#F8FAFC

surface

#F0F5F9

border

#CBCFD2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #3F91BC

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

Preview Lab → · Contrast checker → · Palette generator →