#237B9D#237B9D

#237B9D is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 54.8% C 0.096 H 228.8°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#237B9D
RGB	rgb(35, 123, 157)
HSL	hsl(197, 64%, 38%)
HSV	hsv(197, 78%, 62%)
CMYK	cmyk(77.7%, 21.7%, 0%, 38.4%)
CIE-LAB	lab(48.20, -13.57, -25.56)
CIE-LCH	lch(48.20, 28.94, 242.04°)
OKLab	oklab(54.77% -0.063 -0.0718)
OKLCH	oklch(54.77% 0.096 228.8)
XYZ	xyz(13.8594, 16.9559, 34.4341)
Luminance	0.1696 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237B9D #9D4523

analogous

#239D82 #237B9D #233E9D

triadic

#237B9D #9D237B #7B9D23

tetradic

#237B9D #82239D #9D4523 #3E9D23

square

#237B9D #82239D #9D4523 #3E9D23

split-complementary

#237B9D #9D233E #9D8223

monochromatic

#0D2D39 #18546B #237B9D #2EA2CF #5FB9DB

Accessibility & contrast

On white

4.78

#237B9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#237B9D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237B9D

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237B9D	#FFFFFF	#000000	##FFFFFF
##237B9D	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69799F

Deuteranopia (green-blind)

#596D9D

Tritanopia (blue-blind)

#008586

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #237b9d;
/* rgb */ color: rgb(35, 123, 157);
/* oklch */ color: oklch(54.8% 0.096 228.8);

Tailwind

colors: {
  custom: {
    50: '#71a1ba',
    500: '#237b9d',
    950: '#000000',
  },
}

SCSS

$custom: #237b9d;
$custom-light: #71a1ba;
$custom-dark: #000000;

JSON

{
  "hex": "#237b9d",
  "rgb": {
    "r": 35,
    "g": 123,
    "b": 157
  },
  "hsl": {
    "h": 196.721,
    "s": 63.542,
    "l": 37.647
  },
  "oklch": {
    "l": 0.54768,
    "c": 0.09551,
    "h": 228.8
  },
  "luminance": 0.16958
}

Semantic roles & 50–950 ramp

primary

#237B9D

secondary

#C0785C

accent

#6F41E7

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #237B9D

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

Preview Lab → · Contrast checker → · Palette generator →