#3F91BD#3F91BD

#3F91BD is a light, moderate cyan. Relative luminance 0.250; OKLCH L 62.5% C 0.103 H 235.3°. Best body text is #000000 at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F91BD
RGB	rgb(63, 145, 189)
HSL	hsl(201, 50%, 49%)
HSV	hsv(201, 67%, 74%)
CMYK	cmyk(66.7%, 23.3%, 0%, 25.9%)
CIE-LAB	lab(57.06, -10.92, -30.20)
CIE-LCH	lch(57.06, 32.12, 250.12°)
OKLab	oklab(62.49% -0.0587 -0.0848)
OKLCH	oklch(62.49% 0.103 235.3)
XYZ	xyz(21.3570, 24.9794, 51.8302)
Luminance	0.2498 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91BD #BD6B3F

analogous

#3FBDAA #3F91BD #3F52BD

triadic

#3F91BD #BD3F91 #91BD3F

tetradic

#3F91BD #AA3FBD #BD6B3F #52BD3F

square

#3F91BD #AA3FBD #BD6B3F #52BD3F

split-complementary

#3F91BD #BD3F52 #BDAA3F

monochromatic

#204B61 #306E8F #3F91BD #6BABCE #99C5DD

Accessibility & contrast

On white

3.50

#3F91BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.00

#3F91BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91BD

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91BD	#FFFFFF	#000000	##000000
##3F91BD	1.00	3.50	6.00	6.00
#FFFFFF	3.50	1.00	21.00	21.00
#000000	6.00	21.00	1.00	1.00
##000000	6.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C90BF

Deuteranopia (green-blind)

#6B83BC

Tritanopia (blue-blind)

#009CA0

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3f91bd;
/* rgb */ color: rgb(63, 145, 189);
/* oklch */ color: oklch(62.5% 0.103 235.3);

Tailwind

colors: {
  custom: {
    50: '#82b1d1',
    500: '#3f91bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f91bd;
$custom-light: #82b1d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91bd",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 189
  },
  "hsl": {
    "h": 200.952,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.62494,
    "c": 0.10313,
    "h": 235.3
  },
  "luminance": 0.24982
}

Semantic roles & 50–950 ramp

primary

#3F91BD

secondary

#C9A38F

accent

#7F4EDA

background

#F8FAFC

surface

#F0F5F9

border

#CBCFD2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #3F91BD

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

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