#289CBB#289CBB

#289CBB is a light, moderate cyan. Relative luminance 0.278; OKLCH L 64.4% C 0.108 H 220.6°. Best body text is #000000 at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#289CBB
RGB	rgb(40, 156, 187)
HSL	hsl(193, 65%, 45%)
HSV	hsv(193, 79%, 73%)
CMYK	cmyk(78.6%, 16.6%, 0%, 26.7%)
CIE-LAB	lab(59.72, -20.65, -25.00)
CIE-LCH	lch(59.72, 32.42, 230.45°)
OKLab	oklab(64.44% -0.0817 -0.07)
OKLCH	oklch(64.44% 0.108 220.6)
XYZ	xyz(21.7294, 27.8132, 51.2273)
Luminance	0.2782 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289CBB #BB4728

analogous

#28BB91 #289CBB #2853BB

triadic

#289CBB #BB289C #9CBB28

tetradic

#289CBB #9128BB #BB4728 #53BB28

square

#289CBB #9128BB #BB4728 #53BB28

split-complementary

#289CBB #BB2853 #BB9128

monochromatic

#124856 #1D7289 #289CBB #48BAD8 #7BCDE3

Accessibility & contrast

On white

3.20

#289CBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.56

#289CBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289CBB

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289CBB	#FFFFFF	#000000	##000000
##289CBB	1.00	3.20	6.56	6.56
#FFFFFF	3.20	1.00	21.00	21.00
#000000	6.56	21.00	1.00	1.00
##000000	6.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8998BD

Deuteranopia (green-blind)

#768ABB

Tritanopia (blue-blind)

#00A6A6

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #289cbb;
/* rgb */ color: rgb(40, 156, 187);
/* oklch */ color: oklch(64.4% 0.108 220.6);

Tailwind

colors: {
  custom: {
    50: '#7ab9cf',
    500: '#289cbb',
    950: '#000000',
  },
}

SCSS

$custom: #289cbb;
$custom-light: #7ab9cf;
$custom-dark: #000000;

JSON

{
  "hex": "#289cbb",
  "rgb": {
    "r": 40,
    "g": 156,
    "b": 187
  },
  "hsl": {
    "h": 192.653,
    "s": 64.758,
    "l": 44.51
  },
  "oklch": {
    "l": 0.64435,
    "c": 0.1076,
    "h": 220.6
  },
  "luminance": 0.27816
}

Semantic roles & 50–950 ramp

primary

#289CBB

secondary

#CB8674

accent

#6340E8

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #289CBB

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

Preview Lab → · Contrast checker → · Palette generator →