#2188B3#2188B3

#2188B3 is a mid, moderate cyan. Relative luminance 0.212; OKLCH L 59.0% C 0.110 H 231.7°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#2188B3
RGB	rgb(33, 136, 179)
HSL	hsl(198, 69%, 42%)
HSV	hsv(198, 82%, 70%)
CMYK	cmyk(81.6%, 24%, 0%, 29.8%)
CIE-LAB	lab(53.15, -13.26, -30.63)
CIE-LCH	lch(53.15, 33.38, 246.59°)
OKLab	oklab(59.03% -0.0682 -0.0863)
OKLCH	oklch(59.03% 0.11 231.7)
XYZ	xyz(17.5647, 21.1841, 45.8023)
Luminance	0.2119 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2188B3 #B34C21

analogous

#21B395 #2188B3 #213FB3

triadic

#2188B3 #B32188 #88B321

tetradic

#2188B3 #9521B3 #B34C21 #3FB321

square

#2188B3 #9521B3 #B34C21 #3FB321

split-complementary

#2188B3 #B3213F #B39521

monochromatic

#0E394C #17617F #2188B3 #37AADA #6BC0E4

Accessibility & contrast

On white

4.01

#2188B3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#2188B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2188B3

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2188B3	#FFFFFF	#000000	##000000
##2188B3	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7286B5

Deuteranopia (green-blind)

#5F79B2

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #2188b3;
/* rgb */ color: rgb(33, 136, 179);
/* oklch */ color: oklch(59.0% 0.110 231.7);

Tailwind

colors: {
  custom: {
    50: '#75aaca',
    500: '#2188b3',
    950: '#000000',
  },
}

SCSS

$custom: #2188b3;
$custom-light: #75aaca;
$custom-dark: #000000;

JSON

{
  "hex": "#2188b3",
  "rgb": {
    "r": 33,
    "g": 136,
    "b": 179
  },
  "hsl": {
    "h": 197.671,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.59026,
    "c": 0.11005,
    "h": 231.7
  },
  "luminance": 0.21186
}

Semantic roles & 50–950 ramp

primary

#2188B3

secondary

#CA8366

accent

#703CEC

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #2188B3

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

Preview Lab → · Contrast checker → · Palette generator →