#288CB2#288CB2

#288CB2 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.1% C 0.105 H 228.5°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#288CB2
RGB	rgb(40, 140, 178)
HSL	hsl(197, 63%, 43%)
HSV	hsv(197, 78%, 70%)
CMYK	cmyk(77.5%, 21.3%, 0%, 30.2%)
CIE-LAB	lab(54.47, -15.10, -28.00)
CIE-LCH	lch(54.47, 31.81, 241.66°)
OKLab	oklab(60.11% -0.0697 -0.0787)
OKLCH	oklch(60.11% 0.105 228.5)
XYZ	xyz(18.2857, 22.4194, 45.4745)
Luminance	0.2242 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288CB2 #B24E28

analogous

#28B293 #288CB2 #2847B2

triadic

#288CB2 #B2288C #8CB228

tetradic

#288CB2 #9328B2 #B24E28 #47B228

square

#288CB2 #9328B2 #B24E28 #47B228

split-complementary

#288CB2 #B22847 #B29328

monochromatic

#123D4E #1D6580 #288CB2 #43ACD5 #75C2E0

Accessibility & contrast

On white

3.83

#288CB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#288CB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288CB2

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288CB2	#FFFFFF	#000000	##000000
##288CB2	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788AB4

Deuteranopia (green-blind)

#667DB1

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #288cb2;
/* rgb */ color: rgb(40, 140, 178);
/* oklch */ color: oklch(60.1% 0.105 228.5);

Tailwind

colors: {
  custom: {
    50: '#77adc9',
    500: '#288cb2',
    950: '#000000',
  },
}

SCSS

$custom: #288cb2;
$custom-light: #77adc9;
$custom-dark: #000000;

JSON

{
  "hex": "#288cb2",
  "rgb": {
    "r": 40,
    "g": 140,
    "b": 178
  },
  "hsl": {
    "h": 196.522,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.60105,
    "c": 0.10508,
    "h": 228.5
  },
  "luminance": 0.22422
}

Semantic roles & 50–950 ramp

primary

#288CB2

secondary

#C7876F

accent

#6F41E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288CB2

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

Preview Lab → · Contrast checker → · Palette generator →