#3181B5#3181B5

#3181B5 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.8% C 0.111 H 241.2°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3181B5
RGB	rgb(49, 129, 181)
HSL	hsl(204, 57%, 45%)
HSV	hsv(204, 73%, 71%)
CMYK	cmyk(72.9%, 28.7%, 0%, 29%)
CIE-LAB	lab(51.48, -6.67, -34.36)
CIE-LCH	lch(51.48, 35.00, 259.01°)
OKLab	oklab(57.83% -0.0534 -0.0971)
OKLCH	oklch(57.83% 0.111 241.2)
XYZ	xyz(17.4541, 19.6877, 46.5873)
Luminance	0.1969 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181B5 #B56531

analogous

#31B5A7 #3181B5 #313FB5

triadic

#3181B5 #B53181 #81B531

tetradic

#3181B5 #A731B5 #B56531 #3FB531

square

#3181B5 #A731B5 #B56531 #3FB531

split-complementary

#3181B5 #B5313F #B5A731

monochromatic

#173C55 #245F85 #3181B5 #539FD0 #83BADD

Accessibility & contrast

On white

4.25

#3181B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#3181B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181B5

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181B5	#FFFFFF	#000000	##000000
##3181B5	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6982B7

Deuteranopia (green-blind)

#5775B4

Tritanopia (blue-blind)

#008E93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3181b5;
/* rgb */ color: rgb(49, 129, 181);
/* oklch */ color: oklch(57.8% 0.111 241.2);

Tailwind

colors: {
  custom: {
    50: '#7aa5cb',
    500: '#3181b5',
    950: '#000000',
  },
}

SCSS

$custom: #3181b5;
$custom-light: #7aa5cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3181b5",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 181
  },
  "hsl": {
    "h": 203.636,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.57834,
    "c": 0.11082,
    "h": 241.2
  },
  "luminance": 0.1969
}

Semantic roles & 50–950 ramp

primary

#3181B5

secondary

#C7997B

accent

#8447E1

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3181B5

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

Preview Lab → · Contrast checker → · Palette generator →