#3181AD#3181AD

#3181AD is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.4% C 0.102 H 236.7°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3181AD
RGB	rgb(49, 129, 173)
HSL	hsl(201, 56%, 44%)
HSV	hsv(201, 72%, 68%)
CMYK	cmyk(71.7%, 25.4%, 0%, 32.2%)
CIE-LAB	lab(51.12, -9.49, -30.32)
CIE-LCH	lch(51.12, 31.77, 252.62°)
OKLab	oklab(57.42% -0.0561 -0.0854)
OKLCH	oklch(57.42% 0.102 236.7)
XYZ	xyz(16.6567, 19.3687, 42.3877)
Luminance	0.1937 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181AD #AD5D31

analogous

#31AD9B #3181AD #3143AD

triadic

#3181AD #AD3181 #81AD31

tetradic

#3181AD #9B31AD #AD5D31 #43AD31

square

#3181AD #9B31AD #AD5D31 #43AD31

split-complementary

#3181AD #AD3143 #AD9B31

monochromatic

#163A4E #235D7D #3181AD #4EA0CD #7EBADA

Accessibility & contrast

On white

4.31

#3181AD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#3181AD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181AD

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181AD	#FFFFFF	#000000	##000000
##3181AD	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C80AF

Deuteranopia (green-blind)

#5B74AC

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3181ad;
/* rgb */ color: rgb(49, 129, 173);
/* oklch */ color: oklch(57.4% 0.102 236.7);

Tailwind

colors: {
  custom: {
    50: '#79a5c5',
    500: '#3181ad',
    950: '#000000',
  },
}

SCSS

$custom: #3181ad;
$custom-light: #79a5c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3181ad",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 173
  },
  "hsl": {
    "h": 201.29,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.57423,
    "c": 0.10217,
    "h": 236.7
  },
  "luminance": 0.19371
}

Semantic roles & 50–950 ramp

primary

#3181AD

secondary

#C39277

accent

#7E49DF

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3181AD

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

Preview Lab → · Contrast checker → · Palette generator →