#3181CF#3181CF

#3181CF is a mid, vivid cyan. Relative luminance 0.209; OKLCH L 59.3% C 0.142 H 251.1°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#3181CF
RGB	rgb(49, 129, 207)
HSL	hsl(210, 62%, 50%)
HSV	hsv(210, 76%, 81%)
CMYK	cmyk(76.3%, 37.7%, 0%, 18.8%)
CIE-LAB	lab(52.79, 2.73, -47.14)
CIE-LCH	lch(52.79, 47.22, 273.31°)
OKLab	oklab(59.29% -0.046 -0.1344)
OKLCH	oklch(59.29% 0.142 251.1)
XYZ	xyz(20.3751, 20.8561, 61.9712)
Luminance	0.2086 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181CF #CF7F31

analogous

#31CFCE #3181CF #3132CF

triadic

#3181CF #CF3181 #81CF31

tetradic

#3181CF #CE31CF #CF7F31 #32CF31

square

#3181CF #CE31CF #CF7F31 #32CF31

split-complementary

#3181CF #CF3132 #CFCE31

monochromatic

#19436C #25629E #3181CF #639FDB #94BEE6

Accessibility & contrast

On white

4.06

#3181CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#3181CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181CF

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181CF	#FFFFFF	#000000	##000000
##3181CF	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C86D2

Deuteranopia (green-blind)

#4477CD

Tritanopia (blue-blind)

#00949E

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3181cf;
/* rgb */ color: rgb(49, 129, 207);
/* oklch */ color: oklch(59.3% 0.142 251.1);

Tailwind

colors: {
  custom: {
    50: '#7fa5de',
    500: '#3181cf',
    950: '#000000',
  },
}

SCSS

$custom: #3181cf;
$custom-light: #7fa5de;
$custom-dark: #000000;

JSON

{
  "hex": "#3181cf",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 207
  },
  "hsl": {
    "h": 209.62,
    "s": 62.205,
    "l": 50.196
  },
  "oklch": {
    "l": 0.59293,
    "c": 0.14205,
    "h": 251.1
  },
  "luminance": 0.20858
}

Semantic roles & 50–950 ramp

primary

#3181CF

secondary

#D1AD8B

accent

#9343E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3181CF

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

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