#237D99#237D99

#237D99 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.1% C 0.092 H 223.5°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#237D99
RGB	rgb(35, 125, 153)
HSL	hsl(194, 63%, 37%)
HSV	hsv(194, 77%, 60%)
CMYK	cmyk(77.1%, 18.3%, 0%, 40%)
CIE-LAB	lab(48.66, -16.09, -22.51)
CIE-LCH	lch(48.66, 27.67, 234.44°)
OKLab	oklab(55.08% -0.0665 -0.0631)
OKLCH	oklch(55.08% 0.092 223.5)
XYZ	xyz(13.7741, 17.3228, 32.7485)
Luminance	0.1732 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237D99 #993F23

analogous

#23997A #237D99 #234299

triadic

#237D99 #99237D #7D9923

tetradic

#237D99 #7A2399 #993F23 #429923

square

#237D99 #7A2399 #993F23 #429923

split-complementary

#237D99 #992342 #997A23

monochromatic

#0C2C35 #185467 #237D99 #2EA6CB #5DBCDA

Accessibility & contrast

On white

4.70

#237D99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#237D99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237D99

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237D99	#FFFFFF	#000000	##FFFFFF
##237D99	1.00	4.70	4.46	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7A9A

Deuteranopia (green-blind)

#5D6F99

Tritanopia (blue-blind)

#008686

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237d99;
/* rgb */ color: rgb(35, 125, 153);
/* oklch */ color: oklch(55.1% 0.092 223.5);

Tailwind

colors: {
  custom: {
    50: '#71a2b7',
    500: '#237d99',
    950: '#000000',
  },
}

SCSS

$custom: #237d99;
$custom-light: #71a2b7;
$custom-dark: #000000;

JSON

{
  "hex": "#237d99",
  "rgb": {
    "r": 35,
    "g": 125,
    "b": 153
  },
  "hsl": {
    "h": 194.237,
    "s": 62.766,
    "l": 36.863
  },
  "oklch": {
    "l": 0.55081,
    "c": 0.09166,
    "h": 223.5
  },
  "luminance": 0.17324
}

Semantic roles & 50–950 ramp

primary

#237D99

secondary

#BE7159

accent

#6942E6

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #237D99

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

Preview Lab → · Contrast checker → · Palette generator →