#3181BE#3181BE

#3181BE is a mid, vivid cyan. Relative luminance 0.201; OKLCH L 58.3% C 0.121 H 245.3°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#3181BE
RGB	rgb(49, 129, 190)
HSL	hsl(206, 59%, 47%)
HSV	hsv(206, 74%, 75%)
CMYK	cmyk(74.2%, 32.1%, 0%, 25.5%)
CIE-LAB	lab(51.92, -3.46, -38.84)
CIE-LCH	lch(51.92, 39.00, 264.92°)
OKLab	oklab(58.32% -0.0506 -0.1101)
OKLCH	oklch(58.32% 0.121 245.3)
XYZ	xyz(18.4076, 20.0691, 51.6088)
Luminance	0.2007 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181BE #BE6E31

analogous

#31BEB5 #3181BE #313BBE

triadic

#3181BE #BE3181 #81BE31

tetradic

#3181BE #B531BE #BE6E31 #3BBE31

square

#3181BE #B531BE #BE6E31 #3BBE31

split-complementary

#3181BE #BE313B #BEB531

monochromatic

#183F5D #24608D #3181BE #589ED4 #89BBE1

Accessibility & contrast

On white

4.19

#3181BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#3181BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181BE

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181BE	#FFFFFF	#000000	##000000
##3181BE	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6583C1

Deuteranopia (green-blind)

#5176BD

Tritanopia (blue-blind)

#009097

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3181be;
/* rgb */ color: rgb(49, 129, 190);
/* oklch */ color: oklch(58.3% 0.121 245.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3181be",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 190
  },
  "hsl": {
    "h": 205.957,
    "s": 58.996,
    "l": 46.863
  },
  "oklch": {
    "l": 0.58318,
    "c": 0.12122,
    "h": 245.3
  },
  "luminance": 0.20071
}

Semantic roles & 50–950 ramp

primary

#3181BE

secondary

#CAA080

accent

#8946E2

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3181BE

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

Preview Lab → · Contrast checker → · Palette generator →