#288BA4#288BA4

#288BA4 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.2% C 0.095 H 218.8°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#288BA4
RGB	rgb(40, 139, 164)
HSL	hsl(192, 61%, 40%)
HSV	hsv(192, 76%, 64%)
CMYK	cmyk(75.6%, 15.2%, 0%, 35.7%)
CIE-LAB	lab(53.59, -19.34, -21.31)
CIE-LCH	lch(53.59, 28.78, 227.77°)
OKLab	oklab(59.22% -0.0741 -0.0595)
OKLCH	oklch(59.22% 0.095 218.8)
XYZ	xyz(16.8057, 21.5947, 38.3972)
Luminance	0.2160 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288BA4 #A44128

analogous

#28A47F #288BA4 #284DA4

triadic

#288BA4 #A4288B #8BA428

tetradic

#288BA4 #7F28A4 #A44128 #4DA428

square

#288BA4 #7F28A4 #A44128 #4DA428

split-complementary

#288BA4 #A4284D #A47F28

monochromatic

#103842 #1C6173 #288BA4 #3AB1CF #6BC4DB

Accessibility & contrast

On white

3.95

#288BA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#288BA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288BA4

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288BA4	#FFFFFF	#000000	##000000
##288BA4	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B87A5

Deuteranopia (green-blind)

#6A7BA4

Tritanopia (blue-blind)

#009393

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #288ba4;
/* rgb */ color: rgb(40, 139, 164);
/* oklch */ color: oklch(59.2% 0.095 218.8);

Tailwind

colors: {
  custom: {
    50: '#75adbf',
    500: '#288ba4',
    950: '#000000',
  },
}

SCSS

$custom: #288ba4;
$custom-light: #75adbf;
$custom-dark: #000000;

JSON

{
  "hex": "#288ba4",
  "rgb": {
    "r": 40,
    "g": 139,
    "b": 164
  },
  "hsl": {
    "h": 192.097,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.59216,
    "c": 0.09506,
    "h": 218.8
  },
  "luminance": 0.21597
}

Semantic roles & 50–950 ramp

primary

#288BA4

secondary

#C17966

accent

#6444E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288BA4

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

Preview Lab → · Contrast checker → · Palette generator →