#3181AB#3181AB

#3181AB is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.3% C 0.100 H 235.4°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3181AB
RGB	rgb(49, 129, 171)
HSL	hsl(201, 55%, 43%)
HSV	hsv(201, 71%, 67%)
CMYK	cmyk(71.3%, 24.6%, 0%, 32.9%)
CIE-LAB	lab(51.03, -10.18, -29.30)
CIE-LCH	lch(51.03, 31.02, 250.83°)
OKLab	oklab(57.32% -0.0568 -0.0824)
OKLCH	oklch(57.32% 0.1 235.4)
XYZ	xyz(16.4647, 19.2919, 41.3762)
Luminance	0.1929 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181AB #AB5B31

analogous

#31AB98 #3181AB #3144AB

triadic

#3181AB #AB3181 #81AB31

tetradic

#3181AB #9831AB #AB5B31 #44AB31

square

#3181AB #9831AB #AB5B31 #44AB31

split-complementary

#3181AB #AB3144 #AB9831

monochromatic

#16394C #235D7B #3181AB #4DA0CC #7DBADA

Accessibility & contrast

On white

4.32

#3181AB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#3181AB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181AB

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181AB	#FFFFFF	#000000	##000000
##3181AB	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D80AD

Deuteranopia (green-blind)

#5C74AA

Tritanopia (blue-blind)

#008C8F

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3181ab;
/* rgb */ color: rgb(49, 129, 171);
/* oklch */ color: oklch(57.3% 0.100 235.4);

Tailwind

colors: {
  custom: {
    50: '#79a5c4',
    500: '#3181ab',
    950: '#000000',
  },
}

SCSS

$custom: #3181ab;
$custom-light: #79a5c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3181ab",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 171
  },
  "hsl": {
    "h": 200.656,
    "s": 55.455,
    "l": 43.137
  },
  "oklch": {
    "l": 0.57323,
    "c": 0.10012,
    "h": 235.4
  },
  "luminance": 0.19294
}

Semantic roles & 50–950 ramp

primary

#3181AB

secondary

#C29075

accent

#7D49DF

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #3181AB

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

Preview Lab → · Contrast checker → · Palette generator →