#288EB0#288EB0

#288EB0 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.5% C 0.103 H 225.3°. Best body text is #000000 at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#288EB0
RGB	rgb(40, 142, 176)
HSL	hsl(195, 63%, 42%)
HSV	hsv(195, 77%, 69%)
CMYK	cmyk(77.3%, 19.3%, 0%, 31%)
CIE-LAB	lab(55.00, -16.89, -26.03)
CIE-LCH	lch(55.00, 31.03, 237.03°)
OKLab	oklab(60.5% -0.0724 -0.073)
OKLCH	oklch(60.5% 0.103 225.3)
XYZ	xyz(18.3813, 22.9295, 44.5229)
Luminance	0.2293 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288EB0 #B04A28

analogous

#28B08E #288EB0 #284AB0

triadic

#288EB0 #B0288E #8EB028

tetradic

#288EB0 #8E28B0 #B04A28 #4AB028

square

#288EB0 #8E28B0 #B04A28 #4AB028

split-complementary

#288EB0 #B0284A #B08E28

monochromatic

#113E4C #1D667E #288EB0 #41AFD4 #73C4DF

Accessibility & contrast

On white

3.76

#288EB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.59

#288EB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288EB0

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288EB0	#FFFFFF	#000000	##000000
##288EB0	1.00	3.76	5.59	5.59
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.59	21.00	1.00	1.00
##000000	5.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8BB2

Deuteranopia (green-blind)

#697EB0

Tritanopia (blue-blind)

#009899

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #288eb0;
/* rgb */ color: rgb(40, 142, 176);
/* oklch */ color: oklch(60.5% 0.103 225.3);

Tailwind

colors: {
  custom: {
    50: '#77afc7',
    500: '#288eb0',
    950: '#000000',
  },
}

SCSS

$custom: #288eb0;
$custom-light: #77afc7;
$custom-dark: #000000;

JSON

{
  "hex": "#288eb0",
  "rgb": {
    "r": 40,
    "g": 142,
    "b": 176
  },
  "hsl": {
    "h": 195,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.60502,
    "c": 0.10281,
    "h": 225.3
  },
  "luminance": 0.22932
}

Semantic roles & 50–950 ramp

primary

#288EB0

secondary

#C6846D

accent

#6B42E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288EB0

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

Preview Lab → · Contrast checker → · Palette generator →