#237B9F#237B9F

#237B9F is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 54.9% C 0.097 H 230.3°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#237B9F
RGB	rgb(35, 123, 159)
HSL	hsl(197, 64%, 38%)
HSV	hsv(197, 78%, 62%)
CMYK	cmyk(78%, 22.6%, 0%, 37.6%)
CIE-LAB	lab(48.29, -12.86, -26.60)
CIE-LCH	lch(48.29, 29.55, 244.20°)
OKLab	oklab(54.87% -0.0622 -0.0748)
OKLCH	oklch(54.87% 0.097 230.3)
XYZ	xyz(14.0316, 17.0248, 35.3408)
Luminance	0.1703 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237B9F #9F4723

analogous

#239F85 #237B9F #233D9F

triadic

#237B9F #9F237B #7B9F23

tetradic

#237B9F #85239F #9F4723 #3D9F23

square

#237B9F #85239F #9F4723 #3D9F23

split-complementary

#237B9F #9F233D #9F8523

monochromatic

#0D2D3B #18546D #237B9F #2EA2D1 #60B8DC

Accessibility & contrast

On white

4.77

#237B9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#237B9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237B9F

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237B9F	#FFFFFF	#000000	##FFFFFF
##237B9F	1.00	4.77	4.41	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6979A1

Deuteranopia (green-blind)

#586D9E

Tritanopia (blue-blind)

#008587

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #237b9f;
/* rgb */ color: rgb(35, 123, 159);
/* oklch */ color: oklch(54.9% 0.097 230.3);

Tailwind

colors: {
  custom: {
    50: '#72a1bb',
    500: '#237b9f',
    950: '#000000',
  },
}

SCSS

$custom: #237b9f;
$custom-light: #72a1bb;
$custom-dark: #000000;

JSON

{
  "hex": "#237b9f",
  "rgb": {
    "r": 35,
    "g": 123,
    "b": 159
  },
  "hsl": {
    "h": 197.419,
    "s": 63.918,
    "l": 38.039
  },
  "oklch": {
    "l": 0.54866,
    "c": 0.09728,
    "h": 230.3
  },
  "luminance": 0.17026
}

Semantic roles & 50–950 ramp

primary

#237B9F

secondary

#C17A5D

accent

#7141E7

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #237B9F

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

Preview Lab → · Contrast checker → · Palette generator →