#288EA4#288EA4

#288EA4 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.0% C 0.095 H 215.7°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#288EA4
RGB	rgb(40, 142, 164)
HSL	hsl(191, 61%, 40%)
HSV	hsv(191, 76%, 64%)
CMYK	cmyk(75.6%, 13.4%, 0%, 35.7%)
CIE-LAB	lab(54.53, -20.93, -19.88)
CIE-LCH	lch(54.53, 28.87, 223.52°)
OKLab	oklab(59.97% -0.0771 -0.0555)
OKLCH	oklch(59.97% 0.095 215.7)
XYZ	xyz(17.2461, 22.4754, 38.5440)
Luminance	0.2248 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288EA4 #A43E28

analogous

#28A47C #288EA4 #2850A4

triadic

#288EA4 #A4288E #8EA428

tetradic

#288EA4 #7C28A4 #A43E28 #50A428

square

#288EA4 #7C28A4 #A43E28 #50A428

split-complementary

#288EA4 #A42850 #A47C28

monochromatic

#103942 #1C6373 #288EA4 #3AB5CF #6BC7DB

Accessibility & contrast

On white

3.82

#288EA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#288EA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288EA4

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288EA4	#FFFFFF	#000000	##000000
##288EA4	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F89A5

Deuteranopia (green-blind)

#6E7DA4

Tritanopia (blue-blind)

#009695

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #288ea4;
/* rgb */ color: rgb(40, 142, 164);
/* oklch */ color: oklch(60.0% 0.095 215.7);

Tailwind

colors: {
  custom: {
    50: '#76afbf',
    500: '#288ea4',
    950: '#000000',
  },
}

SCSS

$custom: #288ea4;
$custom-light: #76afbf;
$custom-dark: #000000;

JSON

{
  "hex": "#288ea4",
  "rgb": {
    "r": 40,
    "g": 142,
    "b": 164
  },
  "hsl": {
    "h": 190.645,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.59967,
    "c": 0.09501,
    "h": 215.7
  },
  "luminance": 0.22477
}

Semantic roles & 50–950 ramp

primary

#288EA4

secondary

#C17666

accent

#6044E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288EA4

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

Preview Lab → · Contrast checker → · Palette generator →