#3181AA#3181AA

#3181AA is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.3% C 0.099 H 234.8°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3181AA
RGB	rgb(49, 129, 170)
HSL	hsl(200, 55%, 43%)
HSV	hsv(200, 71%, 67%)
CMYK	cmyk(71.2%, 24.1%, 0%, 33.3%)
CIE-LAB	lab(50.98, -10.53, -28.79)
CIE-LCH	lch(50.98, 30.66, 249.91°)
OKLab	oklab(57.27% -0.0572 -0.081)
OKLCH	oklch(57.27% 0.099 234.8)
XYZ	xyz(16.3697, 19.2539, 40.8761)
Luminance	0.1926 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181AA #AA5A31

analogous

#31AA97 #3181AA #3144AA

triadic

#3181AA #AA3181 #81AA31

tetradic

#3181AA #9731AA #AA5A31 #44AA31

square

#3181AA #9731AA #AA5A31 #44AA31

split-complementary

#3181AA #AA3144 #AA9731

monochromatic

#16394B #235D7A #3181AA #4DA1CC #7CBAD9

Accessibility & contrast

On white

4.33

#3181AA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#3181AA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181AA

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181AA	#FFFFFF	#000000	##000000
##3181AA	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D80AC

Deuteranopia (green-blind)

#5D74A9

Tritanopia (blue-blind)

#008C8F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3181aa;
/* rgb */ color: rgb(49, 129, 170);
/* oklch */ color: oklch(57.3% 0.099 234.8);

Tailwind

colors: {
  custom: {
    50: '#78a5c3',
    500: '#3181aa',
    950: '#000000',
  },
}

SCSS

$custom: #3181aa;
$custom-light: #78a5c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3181aa",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 170
  },
  "hsl": {
    "h": 200.331,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.57273,
    "c": 0.09911,
    "h": 234.8
  },
  "luminance": 0.19256
}

Semantic roles & 50–950 ramp

primary

#3181AA

secondary

#C28F75

accent

#7C49DF

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #3181AA

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

Preview Lab → · Contrast checker → · Palette generator →