#288CA6#288CA6

#288CA6 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.6% C 0.096 H 219.4°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#288CA6
RGB	rgb(40, 140, 166)
HSL	hsl(192, 61%, 40%)
HSV	hsv(192, 76%, 65%)
CMYK	cmyk(75.9%, 15.7%, 0%, 34.9%)
CIE-LAB	lab(53.98, -19.20, -21.87)
CIE-LCH	lch(53.98, 29.10, 228.71°)
OKLab	oklab(59.55% -0.0743 -0.0611)
OKLCH	oklch(59.55% 0.096 219.4)
XYZ	xyz(17.1332, 21.9584, 39.4044)
Luminance	0.2196 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288CA6 #A64228

analogous

#28A681 #288CA6 #284DA6

triadic

#288CA6 #A6288C #8CA628

tetradic

#288CA6 #8128A6 #A64228 #4DA628

square

#288CA6 #8128A6 #A64228 #4DA628

split-complementary

#288CA6 #A6284D #A68128

monochromatic

#103943 #1C6275 #288CA6 #3BB1D0 #6DC5DC

Accessibility & contrast

On white

3.89

#288CA6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#288CA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288CA6

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288CA6	#FFFFFF	#000000	##000000
##288CA6	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C88A7

Deuteranopia (green-blind)

#6B7CA6

Tritanopia (blue-blind)

#009594

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #288ca6;
/* rgb */ color: rgb(40, 140, 166);
/* oklch */ color: oklch(59.6% 0.096 219.4);

Tailwind

colors: {
  custom: {
    50: '#76adc0',
    500: '#288ca6',
    950: '#000000',
  },
}

SCSS

$custom: #288ca6;
$custom-light: #76adc0;
$custom-dark: #000000;

JSON

{
  "hex": "#288ca6",
  "rgb": {
    "r": 40,
    "g": 140,
    "b": 166
  },
  "hsl": {
    "h": 192.381,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.59554,
    "c": 0.09621,
    "h": 219.4
  },
  "luminance": 0.2196
}

Semantic roles & 50–950 ramp

primary

#288CA6

secondary

#C27A67

accent

#6544E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288CA6

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

Preview Lab → · Contrast checker → · Palette generator →