#2188B4#2188B4

#2188B4 is a mid, moderate cyan. Relative luminance 0.212; OKLCH L 59.1% C 0.111 H 232.3°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#2188B4
RGB	rgb(33, 136, 180)
HSL	hsl(198, 69%, 42%)
HSV	hsv(198, 82%, 71%)
CMYK	cmyk(81.7%, 24.4%, 0%, 29.4%)
CIE-LAB	lab(53.19, -12.91, -31.14)
CIE-LCH	lch(53.19, 33.70, 247.48°)
OKLab	oklab(59.08% -0.0679 -0.0878)
OKLCH	oklch(59.08% 0.111 232.3)
XYZ	xyz(17.6662, 21.2247, 46.3369)
Luminance	0.2123 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2188B4 #B44D21

analogous

#21B497 #2188B4 #213FB4

triadic

#2188B4 #B42188 #88B421

tetradic

#2188B4 #9721B4 #B44D21 #3FB421

square

#2188B4 #9721B4 #B44D21 #3FB421

split-complementary

#2188B4 #B4213F #B49721

monochromatic

#0E3A4D #186180 #2188B4 #38AADA #6BC0E4

Accessibility & contrast

On white

4.00

#2188B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#2188B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2188B4

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2188B4	#FFFFFF	#000000	##000000
##2188B4	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7287B6

Deuteranopia (green-blind)

#5F79B3

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #2188b4;
/* rgb */ color: rgb(33, 136, 180);
/* oklch */ color: oklch(59.1% 0.111 232.3);

Tailwind

colors: {
  custom: {
    50: '#76aaca',
    500: '#2188b4',
    950: '#000000',
  },
}

SCSS

$custom: #2188b4;
$custom-light: #76aaca;
$custom-dark: #000000;

JSON

{
  "hex": "#2188b4",
  "rgb": {
    "r": 33,
    "g": 136,
    "b": 180
  },
  "hsl": {
    "h": 197.959,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.59075,
    "c": 0.11097,
    "h": 232.3
  },
  "luminance": 0.21227
}

Semantic roles & 50–950 ramp

primary

#2188B4

secondary

#CA8567

accent

#713CEC

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #2188B4

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

Preview Lab → · Contrast checker → · Palette generator →