#237A9B#237A9B

#237A9B is a mid, moderate cyan. Relative luminance 0.166; OKLCH L 54.4% C 0.094 H 228.2°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#237A9B
RGB	rgb(35, 122, 155)
HSL	hsl(197, 63%, 37%)
HSV	hsv(197, 77%, 61%)
CMYK	cmyk(77.4%, 21.3%, 0%, 39.2%)
CIE-LAB	lab(47.80, -13.72, -25.01)
CIE-LCH	lch(47.80, 28.53, 241.26°)
OKLab	oklab(54.42% -0.0627 -0.0703)
OKLCH	oklch(54.42% 0.094 228.2)
XYZ	xyz(13.5666, 16.6413, 33.5011)
Luminance	0.1664 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237A9B #9B4423

analogous

#239B80 #237A9B #233E9B

triadic

#237A9B #9B237A #7A9B23

tetradic

#237A9B #80239B #9B4423 #3E9B23

square

#237A9B #80239B #9B4423 #3E9B23

split-complementary

#237A9B #9B233E #9B8023

monochromatic

#0C2B37 #185369 #237A9B #2EA1CD #5EB8DB

Accessibility & contrast

On white

4.85

#237A9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#237A9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237A9B

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237A9B	#FFFFFF	#000000	##FFFFFF
##237A9B	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69789D

Deuteranopia (green-blind)

#596C9B

Tritanopia (blue-blind)

#008385

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #237a9b;
/* rgb */ color: rgb(35, 122, 155);
/* oklch */ color: oklch(54.4% 0.094 228.2);

Tailwind

colors: {
  custom: {
    50: '#71a0b8',
    500: '#237a9b',
    950: '#000000',
  },
}

SCSS

$custom: #237a9b;
$custom-light: #71a0b8;
$custom-dark: #000000;

JSON

{
  "hex": "#237a9b",
  "rgb": {
    "r": 35,
    "g": 122,
    "b": 155
  },
  "hsl": {
    "h": 196.5,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.5442,
    "c": 0.09417,
    "h": 228.2
  },
  "luminance": 0.16643
}

Semantic roles & 50–950 ramp

primary

#237A9B

secondary

#BF765A

accent

#6F42E6

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #237A9B

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

Preview Lab → · Contrast checker → · Palette generator →