#237E9F#237E9F

#237E9F is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.6% C 0.096 H 227.3°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#237E9F
RGB	rgb(35, 126, 159)
HSL	hsl(196, 64%, 38%)
HSV	hsv(196, 78%, 62%)
CMYK	cmyk(78%, 20.8%, 0%, 37.6%)
CIE-LAB	lab(49.23, -14.55, -25.15)
CIE-LCH	lch(49.23, 29.05, 239.94°)
OKLab	oklab(55.62% -0.0652 -0.0706)
OKLCH	oklch(55.62% 0.096 227.3)
XYZ	xyz(14.4094, 17.7805, 35.4667)
Luminance	0.1778 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237E9F #9F4423

analogous

#239F82 #237E9F #23409F

triadic

#237E9F #9F237E #7E9F23

tetradic

#237E9F #82239F #9F4423 #409F23

square

#237E9F #82239F #9F4423 #409F23

split-complementary

#237E9F #9F2340 #9F8223

monochromatic

#0D2F3B #18566D #237E9F #2EA6D1 #60BBDC

Accessibility & contrast

On white

4.61

#237E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#237E9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237E9F

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237E9F	#FFFFFF	#000000	##FFFFFF
##237E9F	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7CA1

Deuteranopia (green-blind)

#5C709F

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #237e9f;
/* rgb */ color: rgb(35, 126, 159);
/* oklch */ color: oklch(55.6% 0.096 227.3);

Tailwind

colors: {
  custom: {
    50: '#72a3bb',
    500: '#237e9f',
    950: '#000000',
  },
}

SCSS

$custom: #237e9f;
$custom-light: #72a3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#237e9f",
  "rgb": {
    "r": 35,
    "g": 126,
    "b": 159
  },
  "hsl": {
    "h": 195.968,
    "s": 63.918,
    "l": 38.039
  },
  "oklch": {
    "l": 0.55616,
    "c": 0.09609,
    "h": 227.3
  },
  "luminance": 0.17782
}

Semantic roles & 50–950 ramp

primary

#237E9F

secondary

#C1775D

accent

#6D41E7

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #237E9F

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

Preview Lab → · Contrast checker → · Palette generator →