#3181B8#3181B8

#3181B8 is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 58.0% C 0.114 H 242.7°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3181B8
RGB	rgb(49, 129, 184)
HSL	hsl(204, 58%, 46%)
HSV	hsv(204, 73%, 72%)
CMYK	cmyk(73.4%, 29.9%, 0%, 27.8%)
CIE-LAB	lab(51.62, -5.60, -35.86)
CIE-LCH	lch(51.62, 36.30, 261.12°)
OKLab	oklab(57.99% -0.0525 -0.1014)
OKLCH	oklch(57.99% 0.114 242.7)
XYZ	xyz(17.7653, 19.8121, 48.2260)
Luminance	0.1981 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181B8 #B86831

analogous

#31B8AB #3181B8 #313EB8

triadic

#3181B8 #B83181 #81B831

tetradic

#3181B8 #AB31B8 #B86831 #3EB831

square

#3181B8 #AB31B8 #B86831 #3EB831

split-complementary

#3181B8 #B8313E #B8AB31

monochromatic

#173D57 #245F88 #3181B8 #559FD2 #85BADE

Accessibility & contrast

On white

4.23

#3181B8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3181B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181B8

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181B8	#FFFFFF	#000000	##000000
##3181B8	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6882BA

Deuteranopia (green-blind)

#5575B7

Tritanopia (blue-blind)

#008F94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3181b8;
/* rgb */ color: rgb(49, 129, 184);
/* oklch */ color: oklch(58.0% 0.114 242.7);

Tailwind

colors: {
  custom: {
    50: '#7ba5cd',
    500: '#3181b8',
    950: '#000000',
  },
}

SCSS

$custom: #3181b8;
$custom-light: #7ba5cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3181b8",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 184
  },
  "hsl": {
    "h": 204.444,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57993,
    "c": 0.11422,
    "h": 242.7
  },
  "luminance": 0.19814
}

Semantic roles & 50–950 ramp

primary

#3181B8

secondary

#C89B7D

accent

#8647E1

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3181B8

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

Preview Lab → · Contrast checker → · Palette generator →