#3188B4#3188B4

#3188B4 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.5% C 0.105 H 234.8°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3188B4
RGB	rgb(49, 136, 180)
HSL	hsl(200, 57%, 45%)
HSV	hsv(200, 73%, 71%)
CMYK	cmyk(72.8%, 24.4%, 0%, 29.4%)
CIE-LAB	lab(53.55, -11.04, -30.55)
CIE-LCH	lch(53.55, 32.49, 250.13°)
OKLab	oklab(59.46% -0.0607 -0.086)
OKLCH	oklch(59.46% 0.105 234.8)
XYZ	xyz(18.3057, 21.5545, 46.3668)
Luminance	0.2156 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3188B4 #B45D31

analogous

#31B49F #3188B4 #3146B4

triadic

#3188B4 #B43188 #88B431

tetradic

#3188B4 #9F31B4 #B45D31 #46B431

square

#3188B4 #9F31B4 #B45D31 #46B431

split-complementary

#3188B4 #B43146 #B49F31

monochromatic

#173F54 #246484 #3188B4 #52A6D0 #82BFDD

Accessibility & contrast

On white

3.95

#3188B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#3188B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3188B4

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3188B4	#FFFFFF	#000000	##000000
##3188B4	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7387B6

Deuteranopia (green-blind)

#617AB3

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3188b4;
/* rgb */ color: rgb(49, 136, 180);
/* oklch */ color: oklch(59.5% 0.105 234.8);

Tailwind

colors: {
  custom: {
    50: '#7aaaca',
    500: '#3188b4',
    950: '#000000',
  },
}

SCSS

$custom: #3188b4;
$custom-light: #7aaaca;
$custom-dark: #000000;

JSON

{
  "hex": "#3188b4",
  "rgb": {
    "r": 49,
    "g": 136,
    "b": 180
  },
  "hsl": {
    "h": 200.153,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.59462,
    "c": 0.10528,
    "h": 234.8
  },
  "luminance": 0.21557
}

Semantic roles & 50–950 ramp

primary

#3188B4

secondary

#C6947B

accent

#7B47E0

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3188B4

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

Preview Lab → · Contrast checker → · Palette generator →