#3183B8#3183B8

#3183B8 is a mid, moderate cyan. Relative luminance 0.203; OKLCH L 58.5% C 0.113 H 241.1°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX#3183B8
RGBrgb(49, 131, 184)
HSLhsl(204, 58%, 46%)
HSVhsv(204, 73%, 72%)
CMYKcmyk(73.4%, 28.8%, 0%, 27.8%)
CIE-LABlab(52.22, -6.77, -34.92)
CIE-LCHlch(52.22, 35.57, 259.03°)
OKLaboklab(58.47% -0.0544 -0.0987)
OKLCHoklch(58.47% 0.113 241.1)
XYZxyz(18.0313, 20.3442, 48.3146)
Luminance0.2035 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3183B8 #B86631
analogous
#31B8AA #3183B8 #313FB8
triadic
#3183B8 #B83183 #83B831
tetradic
#3183B8 #AA31B8 #B86631 #3FB831
square
#3183B8 #AA31B8 #B86631 #3FB831
split-complementary
#3183B8 #B8313F #B8AA31
monochromatic
#173E57 #246188 #3183B8 #55A1D2 #85BBDE

Accessibility & contrast

On white

4.14
#3183B8 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.07
#3183B8 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3183B8
5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3183B8#FFFFFF#000000##000000
##3183B81.004.145.075.07
#FFFFFF4.141.0021.0021.00
#0000005.0721.001.001.00
##0000005.0721.001.001.00

Color blindness preview

Protanopia (red-blind)
#6A84BA
Deuteranopia (green-blind)
#5877B7
Tritanopia (blue-blind)
#009095
Achromatopsia (no color)
#7D7D7D

Design tokens & code

CSS
--color: #3183b8;
/* rgb */ color: rgb(49, 131, 184);
/* oklch */ color: oklch(58.5% 0.113 241.1);
Tailwind
colors: {
  custom: {
    50: '#7ba6cd',
    500: '#3183b8',
    950: '#000000',
  },
}
SCSS
$custom: #3183b8;
$custom-light: #7ba6cd;
$custom-dark: #000000;
JSON
{
  "hex": "#3183b8",
  "rgb": {
    "r": 49,
    "g": 131,
    "b": 184
  },
  "hsl": {
    "h": 203.556,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.58468,
    "c": 0.1127,
    "h": 241.1
  },
  "luminance": 0.20346
}

Semantic roles & 50–950 ramp

primary
#3183B8
secondary
#C89A7D
accent
#8347E1
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B0F13
muted
#7C7F82

Preview Lab

Preview with #3183B8

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

Preview Lab → · Contrast checker → · Palette generator →

#3183B8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva