#288BA5#288BA5

#288BA5 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.3% C 0.096 H 219.6°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#288BA5
RGB	rgb(40, 139, 165)
HSL	hsl(192, 61%, 40%)
HSV	hsv(192, 76%, 65%)
CMYK	cmyk(75.8%, 15.8%, 0%, 35.3%)
CIE-LAB	lab(53.63, -19.00, -21.83)
CIE-LCH	lch(53.63, 28.94, 228.96°)
OKLab	oklab(59.26% -0.0737 -0.061)
OKLCH	oklch(59.26% 0.096 219.6)
XYZ	xyz(16.8964, 21.6309, 38.8747)
Luminance	0.2163 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288BA5 #A54228

analogous

#28A580 #288BA5 #284CA5

triadic

#288BA5 #A5288B #8BA528

tetradic

#288BA5 #8028A5 #A54228 #4CA528

square

#288BA5 #8028A5 #A54228 #4CA528

split-complementary

#288BA5 #A5284C #A58028

monochromatic

#103842 #1C6274 #288BA5 #3BB1CF #6CC4DB

Accessibility & contrast

On white

3.94

#288BA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#288BA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288BA5

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288BA5	#FFFFFF	#000000	##000000
##288BA5	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B87A6

Deuteranopia (green-blind)

#6A7BA5

Tritanopia (blue-blind)

#009493

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #288ba5;
/* rgb */ color: rgb(40, 139, 165);
/* oklch */ color: oklch(59.3% 0.096 219.6);

Tailwind

colors: {
  custom: {
    50: '#75adbf',
    500: '#288ba5',
    950: '#000000',
  },
}

SCSS

$custom: #288ba5;
$custom-light: #75adbf;
$custom-dark: #000000;

JSON

{
  "hex": "#288ba5",
  "rgb": {
    "r": 40,
    "g": 139,
    "b": 165
  },
  "hsl": {
    "h": 192.48,
    "s": 60.976,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5926,
    "c": 0.09568,
    "h": 219.6
  },
  "luminance": 0.21633
}

Semantic roles & 50–950 ramp

primary

#288BA5

secondary

#C27A67

accent

#6544E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288BA5

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

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