#289BB9#289BB9

#289BB9 is a light, moderate cyan. Relative luminance 0.274; OKLCH L 64.1% C 0.106 H 220.0°. Best body text is #000000 at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#289BB9
RGB	rgb(40, 155, 185)
HSL	hsl(192, 64%, 44%)
HSV	hsv(192, 78%, 73%)
CMYK	cmyk(78.4%, 16.2%, 0%, 27.5%)
CIE-LAB	lab(59.34, -20.79, -24.46)
CIE-LCH	lch(59.34, 32.10, 229.64°)
OKLab	oklab(64.1% -0.0815 -0.0684)
OKLCH	oklch(64.1% 0.106 220)
XYZ	xyz(21.3497, 27.3940, 50.0519)
Luminance	0.2740 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289BB9 #B94628

analogous

#28B98F #289BB9 #2853B9

triadic

#289BB9 #B9289B #9BB928

tetradic

#289BB9 #8F28B9 #B94628 #53B928

square

#289BB9 #8F28B9 #B94628 #53B928

split-complementary

#289BB9 #B92853 #B98F28

monochromatic

#124754 #1D7187 #289BB9 #47B9D7 #79CCE2

Accessibility & contrast

On white

3.24

#289BB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.48

#289BB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289BB9

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289BB9	#FFFFFF	#000000	##000000
##289BB9	1.00	3.24	6.48	6.48
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.48	21.00	1.00	1.00
##000000	6.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8997BB

Deuteranopia (green-blind)

#7589B9

Tritanopia (blue-blind)

#00A5A5

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #289bb9;
/* rgb */ color: rgb(40, 155, 185);
/* oklch */ color: oklch(64.1% 0.106 220.0);

Tailwind

colors: {
  custom: {
    50: '#7ab8ce',
    500: '#289bb9',
    950: '#000000',
  },
}

SCSS

$custom: #289bb9;
$custom-light: #7ab8ce;
$custom-dark: #000000;

JSON

{
  "hex": "#289bb9",
  "rgb": {
    "r": 40,
    "g": 155,
    "b": 185
  },
  "hsl": {
    "h": 192.414,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.64102,
    "c": 0.10647,
    "h": 220
  },
  "luminance": 0.27397
}

Semantic roles & 50–950 ramp

primary

#289BB9

secondary

#CA8573

accent

#6340E7

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #289BB9

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

Preview Lab → · Contrast checker → · Palette generator →