#288DA5#288DA5

#288DA5 is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 59.8% C 0.096 H 217.6°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#288DA5
RGB	rgb(40, 141, 165)
HSL	hsl(192, 61%, 40%)
HSV	hsv(192, 76%, 65%)
CMYK	cmyk(75.8%, 14.5%, 0%, 35.3%)
CIE-LAB	lab(54.25, -20.07, -20.87)
CIE-LCH	lch(54.25, 28.96, 226.12°)
OKLab	oklab(59.76% -0.0757 -0.0583)
OKLCH	oklch(59.76% 0.096 217.6)
XYZ	xyz(17.1886, 22.2154, 38.9721)
Luminance	0.2222 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288DA5 #A54028

analogous

#28A57E #288DA5 #284EA5

triadic

#288DA5 #A5288D #8DA528

tetradic

#288DA5 #7E28A5 #A54028 #4EA528

square

#288DA5 #7E28A5 #A54028 #4EA528

split-complementary

#288DA5 #A5284E #A57E28

monochromatic

#103942 #1C6374 #288DA5 #3BB3CF #6CC6DB

Accessibility & contrast

On white

3.86

#288DA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#288DA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288DA5

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288DA5	#FFFFFF	#000000	##000000
##288DA5	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D89A6

Deuteranopia (green-blind)

#6C7CA5

Tritanopia (blue-blind)

#009595

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #288da5;
/* rgb */ color: rgb(40, 141, 165);
/* oklch */ color: oklch(59.8% 0.096 217.6);

Tailwind

colors: {
  custom: {
    50: '#76aebf',
    500: '#288da5',
    950: '#000000',
  },
}

SCSS

$custom: #288da5;
$custom-light: #76aebf;
$custom-dark: #000000;

JSON

{
  "hex": "#288da5",
  "rgb": {
    "r": 40,
    "g": 141,
    "b": 165
  },
  "hsl": {
    "h": 191.52,
    "s": 60.976,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5976,
    "c": 0.09556,
    "h": 217.6
  },
  "luminance": 0.22217
}

Semantic roles & 50–950 ramp

primary

#288DA5

secondary

#C27867

accent

#6344E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288DA5

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

Preview Lab → · Contrast checker → · Palette generator →