#237F9B#237F9B

#237F9B is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.7% C 0.093 H 223.0°. Best body text is #000000 at 4.58:1 contrast (WCAG AA passes).

Color values

HEX	#237F9B
RGB	rgb(35, 127, 155)
HSL	hsl(194, 63%, 37%)
HSV	hsv(194, 77%, 61%)
CMYK	cmyk(77.4%, 18.1%, 0%, 39.2%)
CIE-LAB	lab(49.38, -16.50, -22.58)
CIE-LCH	lch(49.38, 27.97, 233.84°)
OKLab	oklab(55.68% -0.0677 -0.0633)
OKLCH	oklch(55.68% 0.093 223)
XYZ	xyz(14.1964, 17.9009, 33.7110)
Luminance	0.1790 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237F9B #9B3F23

analogous

#239B7B #237F9B #23439B

triadic

#237F9B #9B237F #7F9B23

tetradic

#237F9B #7B239B #9B3F23 #439B23

square

#237F9B #7B239B #9B3F23 #439B23

split-complementary

#237F9B #9B2343 #9B7B23

monochromatic

#0C2D37 #185669 #237F9B #2EA8CD #5EBDDB

Accessibility & contrast

On white

4.58

#237F9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#237F9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237F9B

4.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237F9B	#FFFFFF	#000000	##000000
##237F9B	1.00	4.58	4.58	4.58
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.58	21.00	1.00	1.00
##000000	4.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7C9C

Deuteranopia (green-blind)

#5F709B

Tritanopia (blue-blind)

#008888

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #237f9b;
/* rgb */ color: rgb(35, 127, 155);
/* oklch */ color: oklch(55.7% 0.093 223.0);

Tailwind

colors: {
  custom: {
    50: '#71a4b8',
    500: '#237f9b',
    950: '#000000',
  },
}

SCSS

$custom: #237f9b;
$custom-light: #71a4b8;
$custom-dark: #000000;

JSON

{
  "hex": "#237f9b",
  "rgb": {
    "r": 35,
    "g": 127,
    "b": 155
  },
  "hsl": {
    "h": 194,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.55679,
    "c": 0.09269,
    "h": 223
  },
  "luminance": 0.17903
}

Semantic roles & 50–950 ramp

primary

#237F9B

secondary

#BF725A

accent

#6842E6

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #237F9B

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

Preview Lab → · Contrast checker → · Palette generator →