#2188BC#2188BC

#2188BC is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.5% C 0.119 H 236.8°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#2188BC
RGB	rgb(33, 136, 188)
HSL	hsl(200, 70%, 43%)
HSV	hsv(200, 82%, 74%)
CMYK	cmyk(82.4%, 27.7%, 0%, 26.3%)
CIE-LAB	lab(53.56, -10.02, -35.15)
CIE-LCH	lch(53.56, 36.55, 254.08°)
OKLab	oklab(59.48% -0.0651 -0.0994)
OKLCH	oklch(59.48% 0.119 236.8)
XYZ	xyz(18.5048, 21.5602, 50.7534)
Luminance	0.2156 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2188BC #BC5521

analogous

#21BCA2 #2188BC #213ABC

triadic

#2188BC #BC2188 #88BC21

tetradic

#2188BC #A221BC #BC5521 #3ABC21

square

#2188BC #A221BC #BC5521 #3ABC21

split-complementary

#2188BC #BC213A #BCA221

monochromatic

#0F3D54 #186288 #2188BC #3DA7DD #71BFE6

Accessibility & contrast

On white

3.95

#2188BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#2188BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2188BC

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2188BC	#FFFFFF	#000000	##000000
##2188BC	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)

#6F88BE

Deuteranopia (green-blind)

#5A7ABB

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #2188bc;
/* rgb */ color: rgb(33, 136, 188);
/* oklch */ color: oklch(59.5% 0.119 236.8);

Tailwind

colors: {
  custom: {
    50: '#77aad0',
    500: '#2188bc',
    950: '#000000',
  },
}

SCSS

$custom: #2188bc;
$custom-light: #77aad0;
$custom-dark: #000000;

JSON

{
  "hex": "#2188bc",
  "rgb": {
    "r": 33,
    "g": 136,
    "b": 188
  },
  "hsl": {
    "h": 200.129,
    "s": 70.136,
    "l": 43.333
  },
  "oklch": {
    "l": 0.59484,
    "c": 0.11883,
    "h": 236.8
  },
  "luminance": 0.21562
}

Semantic roles & 50–950 ramp

primary

#2188BC

secondary

#CD8C6C

accent

#773BED

background

#F7FAFC

surface

#EEF4F9

border

#C9CED2

text

#0A1014

muted

#7C7F82

Preview Lab

Preview with #2188BC

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

Preview Lab → · Contrast checker → · Palette generator →