#288CA9#288CA9

#288CA9 is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 59.7% C 0.098 H 221.9°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#288CA9
RGB	rgb(40, 140, 169)
HSL	hsl(193, 62%, 41%)
HSV	hsv(193, 76%, 66%)
CMYK	cmyk(76.3%, 17.2%, 0%, 33.7%)
CIE-LAB	lab(54.10, -18.19, -23.41)
CIE-LCH	lch(54.10, 29.65, 232.15°)
OKLab	oklab(59.69% -0.0731 -0.0655)
OKLCH	oklch(59.69% 0.098 221.9)
XYZ	xyz(17.4116, 22.0698, 40.8707)
Luminance	0.2207 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288CA9 #A94528

analogous

#28A985 #288CA9 #284CA9

triadic

#288CA9 #A9288C #8CA928

tetradic

#288CA9 #8528A9 #A94528 #4CA928

square

#288CA9 #8528A9 #A94528 #4CA928

split-complementary

#288CA9 #A9284C #A98528

monochromatic

#113A46 #1C6378 #288CA9 #3DB0D1 #6FC4DD

Accessibility & contrast

On white

3.88

#288CA9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#288CA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288CA9

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288CA9	#FFFFFF	#000000	##000000
##288CA9	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B88AB

Deuteranopia (green-blind)

#6A7CA9

Tritanopia (blue-blind)

#009595

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #288ca9;
/* rgb */ color: rgb(40, 140, 169);
/* oklch */ color: oklch(59.7% 0.098 221.9);

Tailwind

colors: {
  custom: {
    50: '#76adc2',
    500: '#288ca9',
    950: '#000000',
  },
}

SCSS

$custom: #288ca9;
$custom-light: #76adc2;
$custom-dark: #000000;

JSON

{
  "hex": "#288ca9",
  "rgb": {
    "r": 40,
    "g": 140,
    "b": 169
  },
  "hsl": {
    "h": 193.488,
    "s": 61.722,
    "l": 40.98
  },
  "oklch": {
    "l": 0.59688,
    "c": 0.09817,
    "h": 221.9
  },
  "luminance": 0.22072
}

Semantic roles & 50–950 ramp

primary

#288CA9

secondary

#C47E69

accent

#6743E5

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288CA9

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

Preview Lab → · Contrast checker → · Palette generator →