#2399BA#2399BA

#2399BA is a light, moderate cyan. Relative luminance 0.267; OKLCH L 63.6% C 0.109 H 222.0°. Best body text is #000000 at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#2399BA
RGB	rgb(35, 153, 186)
HSL	hsl(193, 68%, 43%)
HSV	hsv(193, 81%, 73%)
CMYK	cmyk(81.2%, 17.7%, 0%, 27.1%)
CIE-LAB	lab(58.68, -19.89, -26.05)
CIE-LCH	lch(58.68, 32.77, 232.63°)
OKLab	oklab(63.56% -0.081 -0.073)
OKLCH	oklch(63.56% 0.109 222)
XYZ	xyz(20.9436, 26.6823, 50.4912)
Luminance	0.2668 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2399BA #BA4423

analogous

#23BA90 #2399BA #234DBA

triadic

#2399BA #BA2399 #99BA23

tetradic

#2399BA #9023BA #BA4423 #4DBA23

square

#2399BA #9023BA #BA4423 #4DBA23

split-complementary

#2399BA #BA234D #BA9023

monochromatic

#104453 #196F86 #2399BA #3FB9DB #73CCE5

Accessibility & contrast

On white

3.31

#2399BA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.34

#2399BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2399BA

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2399BA	#FFFFFF	#000000	##000000
##2399BA	1.00	3.31	6.34	6.34
#FFFFFF	3.31	1.00	21.00	21.00
#000000	6.34	21.00	1.00	1.00
##000000	6.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8695BC

Deuteranopia (green-blind)

#7287BA

Tritanopia (blue-blind)

#00A3A4

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #2399ba;
/* rgb */ color: rgb(35, 153, 186);
/* oklch */ color: oklch(63.6% 0.109 222.0);

Tailwind

colors: {
  custom: {
    50: '#78b7ce',
    500: '#2399ba',
    950: '#000000',
  },
}

SCSS

$custom: #2399ba;
$custom-light: #78b7ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2399ba",
  "rgb": {
    "r": 35,
    "g": 153,
    "b": 186
  },
  "hsl": {
    "h": 193.113,
    "s": 68.326,
    "l": 43.333
  },
  "oklch": {
    "l": 0.63561,
    "c": 0.10905,
    "h": 222
  },
  "luminance": 0.26685
}

Semantic roles & 50–950 ramp

primary

#2399BA

secondary

#CC826D

accent

#633DEB

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #2399BA

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

Preview Lab → · Contrast checker → · Palette generator →