#3181E2#3181E2

#3181E2 is a mid, vivid cyan. Relative luminance 0.218; OKLCH L 60.5% C 0.166 H 255.4°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3181E2
RGB	rgb(49, 129, 226)
HSL	hsl(213, 75%, 54%)
HSV	hsv(213, 78%, 89%)
CMYK	cmyk(78.3%, 42.9%, 0%, 11.4%)
CIE-LAB	lab(53.86, 9.74, -56.14)
CIE-LCH	lch(53.86, 56.98, 279.84°)
OKLab	oklab(60.47% -0.0417 -0.1608)
OKLCH	oklch(60.47% 0.166 255.4)
XYZ	xyz(22.8392, 21.8417, 74.9489)
Luminance	0.2184 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181E2 #E29231

analogous

#31DAE2 #3181E2 #3A31E2

triadic

#3181E2 #E23181 #81E231

tetradic

#3181E2 #E231DA #E29231 #31E23A

square

#3181E2 #E231DA #E29231 #31E23A

split-complementary

#3181E2 #E23A31 #DAE231

monochromatic

#134786 #1A63BB #3181E2 #67A2EA #9CC3F1

Accessibility & contrast

On white

3.91

#3181E2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#3181E2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181E2

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181E2	#FFFFFF	#000000	##000000
##3181E2	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5089E6

Deuteranopia (green-blind)

#2E79E0

Tritanopia (blue-blind)

#0098A6

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3181e2;
/* rgb */ color: rgb(49, 129, 226);
/* oklch */ color: oklch(60.5% 0.166 255.4);

Tailwind

colors: {
  custom: {
    50: '#83a4ec',
    500: '#3181e2',
    950: '#000000',
  },
}

SCSS

$custom: #3181e2;
$custom-light: #83a4ec;
$custom-dark: #000000;

JSON

{
  "hex": "#3181e2",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 226
  },
  "hsl": {
    "h": 212.881,
    "s": 75.319,
    "l": 53.922
  },
  "oklch": {
    "l": 0.60471,
    "c": 0.16617,
    "h": 255.4
  },
  "luminance": 0.21844
}

Semantic roles & 50–950 ramp

primary

#3181E2

secondary

#DDBB92

accent

#9D36F2

background

#F8FAFE

surface

#F0F4FD

border

#CBCED5

text

#0C0F16

muted

#7D7F84

Preview Lab

Preview with #3181E2

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

Preview Lab → · Contrast checker → · Palette generator →