#237B9B#237B9B

#237B9B is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 54.7% C 0.094 H 227.2°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#237B9B
RGB	rgb(35, 123, 155)
HSL	hsl(196, 63%, 37%)
HSV	hsv(196, 77%, 61%)
CMYK	cmyk(77.4%, 20.6%, 0%, 39.2%)
CIE-LAB	lab(48.12, -14.28, -24.52)
CIE-LCH	lch(48.12, 28.38, 239.79°)
OKLab	oklab(54.67% -0.0637 -0.0688)
OKLCH	oklch(54.67% 0.094 227.2)
XYZ	xyz(13.6901, 16.8882, 33.5422)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237B9B #9B4323

analogous

#239B7F #237B9B #233F9B

triadic

#237B9B #9B237B #7B9B23

tetradic

#237B9B #7F239B #9B4323 #3F9B23

square

#237B9B #7F239B #9B4323 #3F9B23

split-complementary

#237B9B #9B233F #9B7F23

monochromatic

#0C2C37 #185369 #237B9B #2EA3CD #5EB9DB

Accessibility & contrast

On white

4.80

#237B9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#237B9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237B9B

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237B9B	#FFFFFF	#000000	##FFFFFF
##237B9B	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A799D

Deuteranopia (green-blind)

#5A6D9B

Tritanopia (blue-blind)

#008486

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #237b9b;
/* rgb */ color: rgb(35, 123, 155);
/* oklch */ color: oklch(54.7% 0.094 227.2);

Tailwind

colors: {
  custom: {
    50: '#71a1b8',
    500: '#237b9b',
    950: '#000000',
  },
}

SCSS

$custom: #237b9b;
$custom-light: #71a1b8;
$custom-dark: #000000;

JSON

{
  "hex": "#237b9b",
  "rgb": {
    "r": 35,
    "g": 123,
    "b": 155
  },
  "hsl": {
    "h": 196,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.54672,
    "c": 0.0938,
    "h": 227.2
  },
  "luminance": 0.1689
}

Semantic roles & 50–950 ramp

primary

#237B9B

secondary

#BF755A

accent

#6D42E6

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #237B9B

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

Preview Lab → · Contrast checker → · Palette generator →