#288FB6#288FB6

#288FB6 is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 61.0% C 0.107 H 228.5°. Best body text is #000000 at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#288FB6
RGB	rgb(40, 143, 182)
HSL	hsl(196, 64%, 44%)
HSV	hsv(196, 78%, 71%)
CMYK	cmyk(78%, 21.4%, 0%, 28.6%)
CIE-LAB	lab(55.55, -15.37, -28.60)
CIE-LCH	lch(55.55, 32.47, 241.75°)
OKLab	oklab(61.03% -0.0711 -0.0804)
OKLCH	oklch(61.03% 0.107 228.5)
XYZ	xyz(19.1376, 23.4711, 47.7686)
Luminance	0.2347 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288FB6 #B64F28

analogous

#28B696 #288FB6 #2848B6

triadic

#288FB6 #B6288F #8FB628

tetradic

#288FB6 #9628B6 #B64F28 #48B628

square

#288FB6 #9628B6 #B64F28 #48B628

split-complementary

#288FB6 #B62848 #B69628

monochromatic

#124052 #1D6884 #288FB6 #45AED6 #77C4E1

Accessibility & contrast

On white

3.69

#288FB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.69

#288FB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288FB6

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288FB6	#FFFFFF	#000000	##000000
##288FB6	1.00	3.69	5.69	5.69
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.69	21.00	1.00	1.00
##000000	5.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8DB8

Deuteranopia (green-blind)

#687FB5

Tritanopia (blue-blind)

#009A9C

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #288fb6;
/* rgb */ color: rgb(40, 143, 182);
/* oklch */ color: oklch(61.0% 0.107 228.5);

Tailwind

colors: {
  custom: {
    50: '#78afcc',
    500: '#288fb6',
    950: '#000000',
  },
}

SCSS

$custom: #288fb6;
$custom-light: #78afcc;
$custom-dark: #000000;

JSON

{
  "hex": "#288fb6",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 182
  },
  "hsl": {
    "h": 196.479,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.61028,
    "c": 0.10731,
    "h": 228.5
  },
  "luminance": 0.23473
}

Semantic roles & 50–950 ramp

primary

#288FB6

secondary

#C98971

accent

#6E41E7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288FB6

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

Preview Lab → · Contrast checker → · Palette generator →