#3181D4#3181D4

#3181D4 is a mid, vivid cyan. Relative luminance 0.211; OKLCH L 59.6% C 0.148 H 252.4°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#3181D4
RGB	rgb(49, 129, 212)
HSL	hsl(211, 65%, 51%)
HSV	hsv(211, 77%, 83%)
CMYK	cmyk(76.9%, 39.2%, 0%, 16.9%)
CIE-LAB	lab(53.06, 4.56, -49.54)
CIE-LCH	lch(53.06, 49.75, 275.26°)
OKLab	oklab(59.59% -0.0448 -0.1414)
OKLCH	oklch(59.59% 0.148 252.4)
XYZ	xyz(20.9961, 21.1045, 65.2416)
Luminance	0.2111 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3181D4 #D48431

analogous

#31D3D4 #3181D4 #3231D4

triadic

#3181D4 #D43181 #81D431

tetradic

#3181D4 #D431D3 #D48431 #31D432

square

#3181D4 #D431D3 #D48431 #31D432

split-complementary

#3181D4 #D43231 #D3D431

monochromatic

#184473 #2363A5 #3181D4 #64A0DF #96BFE9

Accessibility & contrast

On white

4.02

#3181D4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#3181D4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3181D4

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3181D4	#FFFFFF	#000000	##000000
##3181D4	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5987D7

Deuteranopia (green-blind)

#3F78D2

Tritanopia (blue-blind)

#0095A0

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3181d4;
/* rgb */ color: rgb(49, 129, 212);
/* oklch */ color: oklch(59.6% 0.148 252.4);

Tailwind

colors: {
  custom: {
    50: '#80a5e2',
    500: '#3181d4',
    950: '#000000',
  },
}

SCSS

$custom: #3181d4;
$custom-light: #80a5e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3181d4",
  "rgb": {
    "r": 49,
    "g": 129,
    "b": 212
  },
  "hsl": {
    "h": 210.552,
    "s": 65.462,
    "l": 51.176
  },
  "oklch": {
    "l": 0.59594,
    "c": 0.14835,
    "h": 252.4
  },
  "luminance": 0.21107
}

Semantic roles & 50–950 ramp

primary

#3181D4

secondary

#D4B18C

accent

#953FE8

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3181D4

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

Preview Lab → · Contrast checker → · Palette generator →