#2188AA#2188AA

#2188AA is a mid, moderate cyan. Relative luminance 0.208; OKLCH L 58.6% C 0.102 H 225.6°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#2188AA
RGB	rgb(33, 136, 170)
HSL	hsl(195, 67%, 40%)
HSV	hsv(195, 81%, 67%)
CMYK	cmyk(80.6%, 20%, 0%, 33.3%)
CIE-LAB	lab(52.77, -16.44, -26.06)
CIE-LCH	lch(52.77, 30.81, 237.74°)
OKLab	oklab(58.59% -0.0716 -0.0732)
OKLCH	oklch(58.59% 0.102 225.6)
XYZ	xyz(16.6840, 20.8319, 41.1640)
Luminance	0.2083 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2188AA #AA4321

analogous

#21AA88 #2188AA #2143AA

triadic

#2188AA #AA2188 #88AA21

tetradic

#2188AA #8821AA #AA4321 #43AA21

square

#2188AA #8821AA #AA4321 #43AA21

split-complementary

#2188AA #AA2143 #AA8821

monochromatic

#0D3643 #175F77 #2188AA #31AED7 #64C2E1

Accessibility & contrast

On white

4.06

#2188AA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#2188AA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2188AA

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2188AA	#FFFFFF	#000000	##000000
##2188AA	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7585AC

Deuteranopia (green-blind)

#6378AA

Tritanopia (blue-blind)

#009293

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #2188aa;
/* rgb */ color: rgb(33, 136, 170);
/* oklch */ color: oklch(58.6% 0.102 225.6);

Tailwind

colors: {
  custom: {
    50: '#74aac3',
    500: '#2188aa',
    950: '#000000',
  },
}

SCSS

$custom: #2188aa;
$custom-light: #74aac3;
$custom-dark: #000000;

JSON

{
  "hex": "#2188aa",
  "rgb": {
    "r": 33,
    "g": 136,
    "b": 170
  },
  "hsl": {
    "h": 194.891,
    "s": 67.488,
    "l": 39.804
  },
  "oklch": {
    "l": 0.5859,
    "c": 0.10235,
    "h": 225.6
  },
  "luminance": 0.20834
}

Semantic roles & 50–950 ramp

primary

#2188AA

secondary

#C67A61

accent

#683DEA

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #2188AA

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

Preview Lab → · Contrast checker → · Palette generator →