#3181CE#3181CE

#3181CE is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.2% C 0.141 H 250.8°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#3181CE
RGB	rgb(49, 129, 206)
HSL	hsl(209, 62%, 50%)
HSV	hsv(209, 76%, 81%)
CMYK	cmyk(76.2%, 37.4%, 0%, 19.2%)
CIE-LAB	lab(52.74, 2.36, -46.66)
CIE-LCH	lch(52.74, 46.72, 272.90°)
OKLab	oklab(59.23% -0.0462 -0.133)
OKLCH	oklch(59.23% 0.141 250.8)
XYZ	xyz(20.2532, 20.8073, 61.3294)
Luminance	0.2081 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181CE #CE7E31

analogous

#31CECD #3181CE #3132CE

triadic

#3181CE #CE3181 #81CE31

tetradic

#3181CE #CD31CE #CE7E31 #32CE31

square

#3181CE #CD31CE #CE7E31 #32CE31

split-complementary

#3181CE #CE3132 #CECD31

monochromatic

#19436B #25629D #3181CE #629FDA #94BDE6

Accessibility & contrast

On white

4.07

#3181CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#3181CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181CE

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181CE	#FFFFFF	#000000	##000000
##3181CE	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D86D1

Deuteranopia (green-blind)

#4577CC

Tritanopia (blue-blind)

#00939D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3181ce;
/* rgb */ color: rgb(49, 129, 206);
/* oklch */ color: oklch(59.2% 0.141 250.8);

Tailwind

colors: {
  custom: {
    50: '#7fa5dd',
    500: '#3181ce',
    950: '#000000',
  },
}

SCSS

$custom: #3181ce;
$custom-light: #7fa5dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3181ce",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 206
  },
  "hsl": {
    "h": 209.427,
    "s": 61.569,
    "l": 50
  },
  "oklch": {
    "l": 0.59234,
    "c": 0.1408,
    "h": 250.8
  },
  "luminance": 0.2081
}

Semantic roles & 50–950 ramp

primary

#3181CE

secondary

#D1AD8A

accent

#9243E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3181CE

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

Preview Lab → · Contrast checker → · Palette generator →