#288DB6#288DB6

#288DB6 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.5% C 0.108 H 230.2°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#288DB6
RGB	rgb(40, 141, 182)
HSL	hsl(197, 64%, 44%)
HSV	hsv(197, 78%, 71%)
CMYK	cmyk(78%, 22.5%, 0%, 28.6%)
CIE-LAB	lab(54.94, -14.26, -29.55)
CIE-LCH	lch(54.94, 32.81, 244.23°)
OKLab	oklab(60.54% -0.0692 -0.0831)
OKLCH	oklch(60.54% 0.108 230.2)
XYZ	xyz(18.8400, 22.8760, 47.6695)
Luminance	0.2288 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288DB6 #B65128

analogous

#28B698 #288DB6 #2846B6

triadic

#288DB6 #B6288D #8DB628

tetradic

#288DB6 #9828B6 #B65128 #46B628

square

#288DB6 #9828B6 #B65128 #46B628

split-complementary

#288DB6 #B62846 #B69828

monochromatic

#123F52 #1D6684 #288DB6 #45ACD6 #77C3E1

Accessibility & contrast

On white

3.77

#288DB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#288DB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288DB6

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288DB6	#FFFFFF	#000000	##000000
##288DB6	1.00	3.77	5.58	5.58
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788BB8

Deuteranopia (green-blind)

#657EB5

Tritanopia (blue-blind)

#00989B

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #288db6;
/* rgb */ color: rgb(40, 141, 182);
/* oklch */ color: oklch(60.5% 0.108 230.2);

Tailwind

colors: {
  custom: {
    50: '#78aecc',
    500: '#288db6',
    950: '#000000',
  },
}

SCSS

$custom: #288db6;
$custom-light: #78aecc;
$custom-dark: #000000;

JSON

{
  "hex": "#288db6",
  "rgb": {
    "r": 40,
    "g": 141,
    "b": 182
  },
  "hsl": {
    "h": 197.324,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.6054,
    "c": 0.10813,
    "h": 230.2
  },
  "luminance": 0.22878
}

Semantic roles & 50–950 ramp

primary

#288DB6

secondary

#C98A71

accent

#7141E7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288DB6

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

Preview Lab → · Contrast checker → · Palette generator →