#237B9E#237B9E

#237B9E is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 54.8% C 0.096 H 229.5°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#237B9E
RGB	rgb(35, 123, 158)
HSL	hsl(197, 64%, 38%)
HSV	hsv(197, 78%, 62%)
CMYK	cmyk(77.8%, 22.2%, 0%, 38%)
CIE-LAB	lab(48.25, -13.22, -26.08)
CIE-LCH	lch(48.25, 29.24, 243.13°)
OKLab	oklab(54.82% -0.0626 -0.0733)
OKLCH	oklch(54.82% 0.096 229.5)
XYZ	xyz(13.9451, 16.9902, 34.8856)
Luminance	0.1699 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237B9E #9E4623

analogous

#239E83 #237B9E #233D9E

triadic

#237B9E #9E237B #7B9E23

tetradic

#237B9E #83239E #9E4623 #3D9E23

square

#237B9E #83239E #9E4623 #3D9E23

split-complementary

#237B9E #9E233D #9E8323

monochromatic

#0D2D3A #18546C #237B9E #2EA2D0 #60B8DC

Accessibility & contrast

On white

4.77

#237B9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#237B9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237B9E

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237B9E	#FFFFFF	#000000	##FFFFFF
##237B9E	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6979A0

Deuteranopia (green-blind)

#586D9E

Tritanopia (blue-blind)

#008587

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #237b9e;
/* rgb */ color: rgb(35, 123, 158);
/* oklch */ color: oklch(54.8% 0.096 229.5);

Tailwind

colors: {
  custom: {
    50: '#71a1ba',
    500: '#237b9e',
    950: '#000000',
  },
}

SCSS

$custom: #237b9e;
$custom-light: #71a1ba;
$custom-dark: #000000;

JSON

{
  "hex": "#237b9e",
  "rgb": {
    "r": 35,
    "g": 123,
    "b": 158
  },
  "hsl": {
    "h": 197.073,
    "s": 63.731,
    "l": 37.843
  },
  "oklch": {
    "l": 0.54817,
    "c": 0.09639,
    "h": 229.5
  },
  "luminance": 0.16992
}

Semantic roles & 50–950 ramp

primary

#237B9E

secondary

#C1795C

accent

#7041E7

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #237B9E

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

Preview Lab → · Contrast checker → · Palette generator →