#289BBC#289BBC

#289BBC is a light, moderate cyan. Relative luminance 0.275; OKLCH L 64.2% C 0.108 H 222.2°. Best body text is #000000 at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#289BBC
RGB	rgb(40, 155, 188)
HSL	hsl(193, 65%, 45%)
HSV	hsv(193, 79%, 74%)
CMYK	cmyk(78.7%, 17.6%, 0%, 26.3%)
CIE-LAB	lab(59.45, -19.78, -25.97)
CIE-LCH	lch(59.45, 32.65, 232.70°)
OKLab	oklab(64.23% -0.0804 -0.0728)
OKLCH	oklch(64.23% 0.108 222.2)
XYZ	xyz(21.6697, 27.5220, 51.7374)
Luminance	0.2752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289BBC #BC4928

analogous

#28BC93 #289BBC #2851BC

triadic

#289BBC #BC289B #9BBC28

tetradic

#289BBC #9328BC #BC4928 #51BC28

square

#289BBC #9328BC #BC4928 #51BC28

split-complementary

#289BBC #BC2851 #BC9328

monochromatic

#134857 #1D718A #289BBC #49B8D8 #7BCCE3

Accessibility & contrast

On white

3.23

#289BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.50

#289BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289BBC

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289BBC	#FFFFFF	#000000	##000000
##289BBC	1.00	3.23	6.50	6.50
#FFFFFF	3.23	1.00	21.00	21.00
#000000	6.50	21.00	1.00	1.00
##000000	6.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8897BE

Deuteranopia (green-blind)

#7489BC

Tritanopia (blue-blind)

#00A5A6

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #289bbc;
/* rgb */ color: rgb(40, 155, 188);
/* oklch */ color: oklch(64.2% 0.108 222.2);

Tailwind

colors: {
  custom: {
    50: '#7ab8d0',
    500: '#289bbc',
    950: '#000000',
  },
}

SCSS

$custom: #289bbc;
$custom-light: #7ab8d0;
$custom-dark: #000000;

JSON

{
  "hex": "#289bbc",
  "rgb": {
    "r": 40,
    "g": 155,
    "b": 188
  },
  "hsl": {
    "h": 193.378,
    "s": 64.912,
    "l": 44.706
  },
  "oklch": {
    "l": 0.64234,
    "c": 0.10843,
    "h": 222.2
  },
  "luminance": 0.27525
}

Semantic roles & 50–950 ramp

primary

#289BBC

secondary

#CB8875

accent

#6540E8

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #289BBC

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

Preview Lab → · Contrast checker → · Palette generator →