#289EBB#289EBB

#289EBB is a light, moderate cyan. Relative luminance 0.285; OKLCH L 64.9% C 0.107 H 218.8°. Best body text is #000000 at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#289EBB
RGB	rgb(40, 158, 187)
HSL	hsl(192, 65%, 45%)
HSV	hsv(192, 79%, 73%)
CMYK	cmyk(78.6%, 15.5%, 0%, 26.7%)
CIE-LAB	lab(60.33, -21.69, -24.07)
CIE-LCH	lch(60.33, 32.40, 227.97°)
OKLab	oklab(64.92% -0.0837 -0.0673)
OKLCH	oklch(64.92% 0.107 218.8)
XYZ	xyz(22.0678, 28.4900, 51.3401)
Luminance	0.2849 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#289EBB #BB4528

analogous

#28BB8F #289EBB #2854BB

triadic

#289EBB #BB289E #9EBB28

tetradic

#289EBB #8F28BB #BB4528 #54BB28

square

#289EBB #8F28BB #BB4528 #54BB28

split-complementary

#289EBB #BB2854 #BB8F28

monochromatic

#124956 #1D7389 #289EBB #48BCD8 #7BCEE3

Accessibility & contrast

On white

3.13

#289EBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.70

#289EBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #289EBB

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##289EBB	#FFFFFF	#000000	##000000
##289EBB	1.00	3.13	6.70	6.70
#FFFFFF	3.13	1.00	21.00	21.00
#000000	6.70	21.00	1.00	1.00
##000000	6.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C99BD

Deuteranopia (green-blind)

#788BBB

Tritanopia (blue-blind)

#00A8A7

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #289ebb;
/* rgb */ color: rgb(40, 158, 187);
/* oklch */ color: oklch(64.9% 0.107 218.8);

Tailwind

colors: {
  custom: {
    50: '#7abbcf',
    500: '#289ebb',
    950: '#000000',
  },
}

SCSS

$custom: #289ebb;
$custom-light: #7abbcf;
$custom-dark: #000000;

JSON

{
  "hex": "#289ebb",
  "rgb": {
    "r": 40,
    "g": 158,
    "b": 187
  },
  "hsl": {
    "h": 191.837,
    "s": 64.758,
    "l": 44.51
  },
  "oklch": {
    "l": 0.64924,
    "c": 0.10738,
    "h": 218.8
  },
  "luminance": 0.28493
}

Semantic roles & 50–950 ramp

primary

#289EBB

secondary

#CB8574

accent

#6140E8

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #289EBB

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

Preview Lab → · Contrast checker → · Palette generator →