#288BA2#288BA2

#288BA2 is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.1% C 0.094 H 217.1°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#288BA2
RGB	rgb(40, 139, 162)
HSL	hsl(191, 60%, 40%)
HSV	hsv(191, 75%, 64%)
CMYK	cmyk(75.3%, 14.2%, 0%, 36.5%)
CIE-LAB	lab(53.52, -20.01, -20.28)
CIE-LCH	lch(53.52, 28.49, 225.38°)
OKLab	oklab(59.13% -0.0749 -0.0566)
OKLCH	oklch(59.13% 0.094 217.1)
XYZ	xyz(16.6265, 21.5230, 37.4535)
Luminance	0.2152 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288BA2 #A23F28

analogous

#28A27C #288BA2 #284EA2

triadic

#288BA2 #A2288B #8BA228

tetradic

#288BA2 #7C28A2 #A23F28 #4EA228

square

#288BA2 #7C28A2 #A23F28 #4EA228

split-complementary

#288BA2 #A2284E #A27C28

monochromatic

#103740 #1C6171 #288BA2 #39B2CE #6AC5DA

Accessibility & contrast

On white

3.96

#288BA2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#288BA2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288BA2

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288BA2	#FFFFFF	#000000	##000000
##288BA2	1.00	3.96	5.31	5.31
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C87A3

Deuteranopia (green-blind)

#6B7BA2

Tritanopia (blue-blind)

#009392

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #288ba2;
/* rgb */ color: rgb(40, 139, 162);
/* oklch */ color: oklch(59.1% 0.094 217.1);

Tailwind

colors: {
  custom: {
    50: '#75adbd',
    500: '#288ba2',
    950: '#000000',
  },
}

SCSS

$custom: #288ba2;
$custom-light: #75adbd;
$custom-dark: #000000;

JSON

{
  "hex": "#288ba2",
  "rgb": {
    "r": 40,
    "g": 139,
    "b": 162
  },
  "hsl": {
    "h": 191.311,
    "s": 60.396,
    "l": 39.608
  },
  "oklch": {
    "l": 0.59128,
    "c": 0.0939,
    "h": 217.1
  },
  "luminance": 0.21525
}

Semantic roles & 50–950 ramp

primary

#288BA2

secondary

#C17665

accent

#6244E4

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288BA2

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

Preview Lab → · Contrast checker → · Palette generator →