#3181AF#3181AF

#3181AF is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.5% C 0.104 H 237.9°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#3181AF
RGB	rgb(49, 129, 175)
HSL	hsl(202, 56%, 44%)
HSV	hsv(202, 72%, 69%)
CMYK	cmyk(72%, 26.3%, 0%, 31.4%)
CIE-LAB	lab(51.21, -8.79, -31.33)
CIE-LCH	lch(51.21, 32.54, 254.33°)
OKLab	oklab(57.52% -0.0554 -0.0883)
OKLCH	oklch(57.52% 0.104 237.9)
XYZ	xyz(16.8517, 19.4467, 43.4146)
Luminance	0.1945 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181AF #AF5F31

analogous

#31AF9E #3181AF #3142AF

triadic

#3181AF #AF3181 #81AF31

tetradic

#3181AF #9E31AF #AF5F31 #42AF31

square

#3181AF #9E31AF #AF5F31 #42AF31

split-complementary

#3181AF #AF3142 #AF9E31

monochromatic

#163B4F #245E7F #3181AF #4FA0CE #7FBADB

Accessibility & contrast

On white

4.29

#3181AF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#3181AF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181AF

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181AF	#FFFFFF	#000000	##000000
##3181AF	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B81B1

Deuteranopia (green-blind)

#5A75AE

Tritanopia (blue-blind)

#008D91

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3181af;
/* rgb */ color: rgb(49, 129, 175);
/* oklch */ color: oklch(57.5% 0.104 237.9);

Tailwind

colors: {
  custom: {
    50: '#79a5c7',
    500: '#3181af',
    950: '#000000',
  },
}

SCSS

$custom: #3181af;
$custom-light: #79a5c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3181af",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 175
  },
  "hsl": {
    "h": 201.905,
    "s": 56.25,
    "l": 43.922
  },
  "oklch": {
    "l": 0.57524,
    "c": 0.10427,
    "h": 237.9
  },
  "luminance": 0.19449
}

Semantic roles & 50–950 ramp

primary

#3181AF

secondary

#C49478

accent

#7F48E0

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3181AF

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

Preview Lab → · Contrast checker → · Palette generator →