#288EA5#288EA5

#288EA5 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.0% C 0.096 H 216.6°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#288EA5
RGB	rgb(40, 142, 165)
HSL	hsl(191, 61%, 40%)
HSV	hsv(191, 76%, 65%)
CMYK	cmyk(75.8%, 13.9%, 0%, 35.3%)
CIE-LAB	lab(54.57, -20.60, -20.40)
CIE-LCH	lch(54.57, 28.99, 224.71°)
OKLab	oklab(60.01% -0.0767 -0.0569)
OKLCH	oklch(60.01% 0.096 216.6)
XYZ	xyz(17.3367, 22.5117, 39.0215)
Luminance	0.2251 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288EA5 #A53F28

analogous

#28A57D #288EA5 #284FA5

triadic

#288EA5 #A5288E #8EA528

tetradic

#288EA5 #7D28A5 #A53F28 #4FA528

square

#288EA5 #7D28A5 #A53F28 #4FA528

split-complementary

#288EA5 #A5284F #A57D28

monochromatic

#103942 #1C6474 #288EA5 #3BB4CF #6CC7DB

Accessibility & contrast

On white

3.82

#288EA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#288EA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288EA5

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288EA5	#FFFFFF	#000000	##000000
##288EA5	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)

#7F8AA6

Deuteranopia (green-blind)

#6E7DA5

Tritanopia (blue-blind)

#009695

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #288ea5;
/* rgb */ color: rgb(40, 142, 165);
/* oklch */ color: oklch(60.0% 0.096 216.6);

Tailwind

colors: {
  custom: {
    50: '#76afbf',
    500: '#288ea5',
    950: '#000000',
  },
}

SCSS

$custom: #288ea5;
$custom-light: #76afbf;
$custom-dark: #000000;

JSON

{
  "hex": "#288ea5",
  "rgb": {
    "r": 40,
    "g": 142,
    "b": 165
  },
  "hsl": {
    "h": 191.04,
    "s": 60.976,
    "l": 40.196
  },
  "oklch": {
    "l": 0.6001,
    "c": 0.09554,
    "h": 216.6
  },
  "luminance": 0.22514
}

Semantic roles & 50–950 ramp

primary

#288EA5

secondary

#C27867

accent

#6144E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288EA5

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

Preview Lab → · Contrast checker → · Palette generator →