#3181B6#3181B6

#3181B6 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.9% C 0.112 H 241.7°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#3181B6
RGB	rgb(49, 129, 182)
HSL	hsl(204, 58%, 45%)
HSV	hsv(204, 73%, 71%)
CMYK	cmyk(73.1%, 29.1%, 0%, 28.6%)
CIE-LAB	lab(51.53, -6.32, -34.86)
CIE-LCH	lch(51.53, 35.43, 259.73°)
OKLab	oklab(57.89% -0.0531 -0.0985)
OKLCH	oklch(57.89% 0.112 241.7)
XYZ	xyz(17.5571, 19.7289, 47.1296)
Luminance	0.1973 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181B6 #B66631

analogous

#31B6A9 #3181B6 #313EB6

triadic

#3181B6 #B63181 #81B631

tetradic

#3181B6 #A931B6 #B66631 #3EB631

square

#3181B6 #A931B6 #B66631 #3EB631

split-complementary

#3181B6 #B6313E #B6A931

monochromatic

#173D56 #245F86 #3181B6 #539FD1 #84BADE

Accessibility & contrast

On white

4.25

#3181B6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#3181B6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181B6

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181B6	#FFFFFF	#000000	##000000
##3181B6	1.00	4.25	4.95	4.95
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6982B8

Deuteranopia (green-blind)

#5675B5

Tritanopia (blue-blind)

#008E94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3181b6;
/* rgb */ color: rgb(49, 129, 182);
/* oklch */ color: oklch(57.9% 0.112 241.7);

Tailwind

colors: {
  custom: {
    50: '#7aa5cc',
    500: '#3181b6',
    950: '#000000',
  },
}

SCSS

$custom: #3181b6;
$custom-light: #7aa5cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3181b6",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 182
  },
  "hsl": {
    "h": 203.91,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.57887,
    "c": 0.11194,
    "h": 241.7
  },
  "luminance": 0.19731
}

Semantic roles & 50–950 ramp

primary

#3181B6

secondary

#C79A7C

accent

#8447E1

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3181B6

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

Preview Lab → · Contrast checker → · Palette generator →