#288AB2#288AB2

#288AB2 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.6% C 0.106 H 230.2°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#288AB2
RGB	rgb(40, 138, 178)
HSL	hsl(197, 63%, 43%)
HSV	hsv(197, 78%, 70%)
CMYK	cmyk(77.5%, 22.5%, 0%, 30.2%)
CIE-LAB	lab(53.86, -14.00, -28.95)
CIE-LCH	lch(53.86, 32.15, 244.20°)
OKLab	oklab(59.61% -0.0677 -0.0814)
OKLCH	oklch(59.61% 0.106 230.2)
XYZ	xyz(17.9962, 21.8403, 45.3780)
Luminance	0.2184 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288AB2 #B25028

analogous

#28B295 #288AB2 #2845B2

triadic

#288AB2 #B2288A #8AB228

tetradic

#288AB2 #9528B2 #B25028 #45B228

square

#288AB2 #9528B2 #B25028 #45B228

split-complementary

#288AB2 #B22845 #B29528

monochromatic

#123D4E #1D6380 #288AB2 #43AAD5 #75C1E0

Accessibility & contrast

On white

3.91

#288AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#288AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288AB2

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288AB2	#FFFFFF	#000000	##000000
##288AB2	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7688B4

Deuteranopia (green-blind)

#637BB1

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #288ab2;
/* rgb */ color: rgb(40, 138, 178);
/* oklch */ color: oklch(59.6% 0.106 230.2);

Tailwind

colors: {
  custom: {
    50: '#77acc9',
    500: '#288ab2',
    950: '#000000',
  },
}

SCSS

$custom: #288ab2;
$custom-light: #77acc9;
$custom-dark: #000000;

JSON

{
  "hex": "#288ab2",
  "rgb": {
    "r": 40,
    "g": 138,
    "b": 178
  },
  "hsl": {
    "h": 197.391,
    "s": 63.303,
    "l": 42.745
  },
  "oklch": {
    "l": 0.59615,
    "c": 0.1059,
    "h": 230.2
  },
  "luminance": 0.21842
}

Semantic roles & 50–950 ramp

primary

#288AB2

secondary

#C7886F

accent

#7141E6

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288AB2

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

Preview Lab → · Contrast checker → · Palette generator →