#3181BF#3181BF

#3181BF is a mid, vivid cyan. Relative luminance 0.201; OKLCH L 58.4% C 0.122 H 245.7°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#3181BF
RGB	rgb(49, 129, 191)
HSL	hsl(206, 59%, 47%)
HSV	hsv(206, 74%, 75%)
CMYK	cmyk(74.3%, 32.5%, 0%, 25.1%)
CIE-LAB	lab(51.96, -3.09, -39.34)
CIE-LCH	lch(51.96, 39.46, 265.50°)
OKLab	oklab(58.37% -0.0503 -0.1116)
OKLCH	oklch(58.37% 0.122 245.7)
XYZ	xyz(18.5172, 20.1129, 52.1864)
Luminance	0.2011 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181BF #BF6F31

analogous

#31BFB6 #3181BF #313ABF

triadic

#3181BF #BF3181 #81BF31

tetradic

#3181BF #B631BF #BF6F31 #3ABF31

square

#3181BF #B631BF #BF6F31 #3ABF31

split-complementary

#3181BF #BF313A #BFB631

monochromatic

#183F5E #25608E #3181BF #599ED4 #8ABBE1

Accessibility & contrast

On white

4.18

#3181BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#3181BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181BF

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181BF	#FFFFFF	#000000	##000000
##3181BF	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6583C2

Deuteranopia (green-blind)

#5176BE

Tritanopia (blue-blind)

#009097

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3181bf;
/* rgb */ color: rgb(49, 129, 191);
/* oklch */ color: oklch(58.4% 0.122 245.7);

Tailwind

colors: {
  custom: {
    50: '#7ca5d2',
    500: '#3181bf',
    950: '#000000',
  },
}

SCSS

$custom: #3181bf;
$custom-light: #7ca5d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3181bf",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 191
  },
  "hsl": {
    "h": 206.197,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.58373,
    "c": 0.12241,
    "h": 245.7
  },
  "luminance": 0.20115
}

Semantic roles & 50–950 ramp

primary

#3181BF

secondary

#CBA181

accent

#8A45E2

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3181BF

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

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