#288DB1#288DB1

#288DB1 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.3% C 0.104 H 226.9°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#288DB1
RGB	rgb(40, 141, 177)
HSL	hsl(196, 63%, 43%)
HSV	hsv(196, 77%, 69%)
CMYK	cmyk(77.4%, 20.3%, 0%, 30.6%)
CIE-LAB	lab(54.73, -16.00, -27.02)
CIE-LCH	lch(54.73, 31.40, 239.37°)
OKLab	oklab(60.3% -0.071 -0.0758)
OKLCH	oklch(60.3% 0.104 226.9)
XYZ	xyz(18.3325, 22.6730, 44.9966)
Luminance	0.2268 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288DB1 #B14C28

analogous

#28B190 #288DB1 #2849B1

triadic

#288DB1 #B1288D #8DB128

tetradic

#288DB1 #9028B1 #B14C28 #49B128

square

#288DB1 #9028B1 #B14C28 #49B128

split-complementary

#288DB1 #B12849 #B19028

monochromatic

#113D4D #1D657F #288DB1 #42AED4 #74C3E0

Accessibility & contrast

On white

3.79

#288DB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#288DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288DB1

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288DB1	#FFFFFF	#000000	##000000
##288DB1	1.00	3.79	5.53	5.53
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8AB3

Deuteranopia (green-blind)

#677DB1

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #288db1;
/* rgb */ color: rgb(40, 141, 177);
/* oklch */ color: oklch(60.3% 0.104 226.9);

Tailwind

colors: {
  custom: {
    50: '#77aec8',
    500: '#288db1',
    950: '#000000',
  },
}

SCSS

$custom: #288db1;
$custom-light: #77aec8;
$custom-dark: #000000;

JSON

{
  "hex": "#288db1",
  "rgb": {
    "r": 40,
    "g": 141,
    "b": 177
  },
  "hsl": {
    "h": 195.766,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.60303,
    "c": 0.10389,
    "h": 226.9
  },
  "luminance": 0.22675
}

Semantic roles & 50–950 ramp

primary

#288DB1

secondary

#C7856E

accent

#6D42E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288DB1

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

Preview Lab → · Contrast checker → · Palette generator →