#289BBB#289BBB

#289BBB is a light, moderate cyan. Relative luminance 0.275; OKLCH L 64.2% C 0.108 H 221.5°. Best body text is #000000 at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#289BBB
RGB	rgb(40, 155, 187)
HSL	hsl(193, 65%, 45%)
HSV	hsv(193, 79%, 73%)
CMYK	cmyk(78.6%, 17.1%, 0%, 26.7%)
CIE-LAB	lab(59.42, -20.12, -25.47)
CIE-LCH	lch(59.42, 32.46, 231.69°)
OKLab	oklab(64.19% -0.0808 -0.0713)
OKLCH	oklch(64.19% 0.108 221.5)
XYZ	xyz(21.5623, 27.4790, 51.1716)
Luminance	0.2748 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289BBB #BB4828

analogous

#28BB92 #289BBB #2852BB

triadic

#289BBB #BB289B #9BBB28

tetradic

#289BBB #9228BB #BB4828 #52BB28

square

#289BBB #9228BB #BB4828 #52BB28

split-complementary

#289BBB #BB2852 #BB9228

monochromatic

#124756 #1D7189 #289BBB #48B9D8 #7BCCE3

Accessibility & contrast

On white

3.23

#289BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.50

#289BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289BBB

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289BBB	#FFFFFF	#000000	##000000
##289BBB	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)

#8897BD

Deuteranopia (green-blind)

#7589BB

Tritanopia (blue-blind)

#00A5A5

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #289bbb;
/* rgb */ color: rgb(40, 155, 187);
/* oklch */ color: oklch(64.2% 0.108 221.5);

Tailwind

colors: {
  custom: {
    50: '#7ab8cf',
    500: '#289bbb',
    950: '#000000',
  },
}

SCSS

$custom: #289bbb;
$custom-light: #7ab8cf;
$custom-dark: #000000;

JSON

{
  "hex": "#289bbb",
  "rgb": {
    "r": 40,
    "g": 155,
    "b": 187
  },
  "hsl": {
    "h": 193.061,
    "s": 64.758,
    "l": 44.51
  },
  "oklch": {
    "l": 0.6419,
    "c": 0.10775,
    "h": 221.5
  },
  "luminance": 0.27482
}

Semantic roles & 50–950 ramp

primary

#289BBB

secondary

#CB8774

accent

#6540E8

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #289BBB

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

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