#288BB6#288BB6

#288BB6 is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 60.1% C 0.109 H 231.9°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#288BB6
RGB	rgb(40, 139, 182)
HSL	hsl(198, 64%, 44%)
HSV	hsv(198, 78%, 71%)
CMYK	cmyk(78%, 23.6%, 0%, 28.6%)
CIE-LAB	lab(54.33, -13.15, -30.49)
CIE-LCH	lch(54.33, 33.21, 246.67°)
OKLab	oklab(60.05% -0.0672 -0.0859)
OKLCH	oklch(60.05% 0.109 231.9)
XYZ	xyz(18.5478, 22.2915, 47.5720)
Luminance	0.2229 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288BB6 #B65328

analogous

#28B69A #288BB6 #2844B6

triadic

#288BB6 #B6288B #8BB628

tetradic

#288BB6 #9A28B6 #B65328 #44B628

square

#288BB6 #9A28B6 #B65328 #44B628

split-complementary

#288BB6 #B62844 #B69A28

monochromatic

#123E52 #1D6584 #288BB6 #45AAD6 #77C1E1

Accessibility & contrast

On white

3.85

#288BB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#288BB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288BB6

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288BB6	#FFFFFF	#000000	##000000
##288BB6	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7589B8

Deuteranopia (green-blind)

#627CB5

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #288bb6;
/* rgb */ color: rgb(40, 139, 182);
/* oklch */ color: oklch(60.1% 0.109 231.9);

Tailwind

colors: {
  custom: {
    50: '#78accc',
    500: '#288bb6',
    950: '#000000',
  },
}

SCSS

$custom: #288bb6;
$custom-light: #78accc;
$custom-dark: #000000;

JSON

{
  "hex": "#288bb6",
  "rgb": {
    "r": 40,
    "g": 139,
    "b": 182
  },
  "hsl": {
    "h": 198.169,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.60054,
    "c": 0.10906,
    "h": 231.9
  },
  "luminance": 0.22294
}

Semantic roles & 50–950 ramp

primary

#288BB6

secondary

#C98C71

accent

#7341E7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288BB6

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

Preview Lab → · Contrast checker → · Palette generator →