#237D9F#237D9F

#237D9F is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.4% C 0.096 H 228.3°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#237D9F
RGB	rgb(35, 125, 159)
HSL	hsl(196, 64%, 38%)
HSV	hsv(196, 78%, 62%)
CMYK	cmyk(78%, 21.4%, 0%, 37.6%)
CIE-LAB	lab(48.92, -13.99, -25.63)
CIE-LCH	lch(48.92, 29.20, 241.37°)
OKLab	oklab(55.37% -0.0642 -0.072)
OKLCH	oklch(55.37% 0.096 228.3)
XYZ	xyz(14.2822, 17.5260, 35.4243)
Luminance	0.1753 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237D9F #9F4523

analogous

#239F83 #237D9F #233F9F

triadic

#237D9F #9F237D #7D9F23

tetradic

#237D9F #83239F #9F4523 #3F9F23

square

#237D9F #83239F #9F4523 #3F9F23

split-complementary

#237D9F #9F233F #9F8323

monochromatic

#0D2E3B #18566D #237D9F #2EA4D1 #60BADC

Accessibility & contrast

On white

4.66

#237D9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#237D9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237D9F

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237D9F	#FFFFFF	#000000	##FFFFFF
##237D9F	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7BA1

Deuteranopia (green-blind)

#5B6F9F

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237d9f;
/* rgb */ color: rgb(35, 125, 159);
/* oklch */ color: oklch(55.4% 0.096 228.3);

Tailwind

colors: {
  custom: {
    50: '#72a2bb',
    500: '#237d9f',
    950: '#000000',
  },
}

SCSS

$custom: #237d9f;
$custom-light: #72a2bb;
$custom-dark: #000000;

JSON

{
  "hex": "#237d9f",
  "rgb": {
    "r": 35,
    "g": 125,
    "b": 159
  },
  "hsl": {
    "h": 196.452,
    "s": 63.918,
    "l": 38.039
  },
  "oklch": {
    "l": 0.55366,
    "c": 0.09646,
    "h": 228.3
  },
  "luminance": 0.17528
}

Semantic roles & 50–950 ramp

primary

#237D9F

secondary

#C1785D

accent

#6E41E7

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #237D9F

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

Preview Lab → · Contrast checker → · Palette generator →