#3183BB#3183BB

#3183BB is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 58.6% C 0.116 H 242.6°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#3183BB
RGB	rgb(49, 131, 187)
HSL	hsl(204, 58%, 46%)
HSV	hsv(204, 74%, 73%)
CMYK	cmyk(73.8%, 29.9%, 0%, 26.7%)
CIE-LAB	lab(52.37, -5.70, -36.42)
CIE-LCH	lch(52.37, 36.86, 261.10°)
OKLab	oklab(58.63% -0.0535 -0.103)
OKLCH	oklch(58.63% 0.116 242.6)
XYZ	xyz(18.3491, 20.4713, 49.9884)
Luminance	0.2047 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3183BB #BB6931

analogous

#31BBAE #3183BB #313EBB

triadic

#3183BB #BB3183 #83BB31

tetradic

#3183BB #AE31BB #BB6931 #3EBB31

square

#3183BB #AE31BB #BB6931 #3EBB31

split-complementary

#3183BB #BB313E #BBAE31

monochromatic

#183F5A #24618B #3183BB #56A0D3 #87BCE0

Accessibility & contrast

On white

4.12

#3183BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#3183BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3183BB

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3183BB	#FFFFFF	#000000	##000000
##3183BB	1.00	4.12	5.09	5.09
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6984BD

Deuteranopia (green-blind)

#5677BA

Tritanopia (blue-blind)

#009197

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3183bb;
/* rgb */ color: rgb(49, 131, 187);
/* oklch */ color: oklch(58.6% 0.116 242.6);

Tailwind

colors: {
  custom: {
    50: '#7ba6cf',
    500: '#3183bb',
    950: '#000000',
  },
}

SCSS

$custom: #3183bb;
$custom-light: #7ba6cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3183bb",
  "rgb": {
    "r": 49,
    "g": 131,
    "b": 187
  },
  "hsl": {
    "h": 204.348,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.58626,
    "c": 0.1161,
    "h": 242.6
  },
  "luminance": 0.20473
}

Semantic roles & 50–950 ramp

primary

#3183BB

secondary

#C99D7F

accent

#8546E2

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3183BB

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

Preview Lab → · Contrast checker → · Palette generator →