#288FB0#288FB0

#288FB0 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.7% C 0.103 H 224.3°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#288FB0
RGB	rgb(40, 143, 176)
HSL	hsl(195, 63%, 42%)
HSV	hsv(195, 77%, 69%)
CMYK	cmyk(77.3%, 18.7%, 0%, 31%)
CIE-LAB	lab(55.31, -17.43, -25.56)
CIE-LCH	lch(55.31, 30.94, 235.71°)
OKLab	oklab(60.75% -0.0733 -0.0716)
OKLCH	oklch(60.75% 0.103 224.3)
XYZ	xyz(18.5308, 23.2284, 44.5728)
Luminance	0.2323 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288FB0 #B04928

analogous

#28B08D #288FB0 #284BB0

triadic

#288FB0 #B0288F #8FB028

tetradic

#288FB0 #8D28B0 #B04928 #4BB028

square

#288FB0 #8D28B0 #B04928 #4BB028

split-complementary

#288FB0 #B0284B #B08D28

monochromatic

#113E4C #1D667E #288FB0 #41B0D4 #73C5DF

Accessibility & contrast

On white

3.72

#288FB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#288FB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288FB0

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288FB0	#FFFFFF	#000000	##000000
##288FB0	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8CB2

Deuteranopia (green-blind)

#6A7FB0

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #288fb0;
/* rgb */ color: rgb(40, 143, 176);
/* oklch */ color: oklch(60.7% 0.103 224.3);

Tailwind

colors: {
  custom: {
    50: '#77b0c7',
    500: '#288fb0',
    950: '#000000',
  },
}

SCSS

$custom: #288fb0;
$custom-light: #77b0c7;
$custom-dark: #000000;

JSON

{
  "hex": "#288fb0",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 176
  },
  "hsl": {
    "h": 194.559,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.60748,
    "c": 0.10254,
    "h": 224.3
  },
  "luminance": 0.23231
}

Semantic roles & 50–950 ramp

primary

#288FB0

secondary

#C6836D

accent

#6A42E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288FB0

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

Preview Lab → · Contrast checker → · Palette generator →