#237BA1#237BA1

#237BA1 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.0% C 0.099 H 231.7°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#237BA1
RGB	rgb(35, 123, 161)
HSL	hsl(198, 64%, 38%)
HSV	hsv(198, 78%, 63%)
CMYK	cmyk(78.3%, 23.6%, 0%, 36.9%)
CIE-LAB	lab(48.38, -12.15, -27.63)
CIE-LCH	lch(48.38, 30.18, 246.27°)
OKLab	oklab(54.97% -0.0614 -0.0778)
OKLCH	oklch(54.97% 0.099 231.7)
XYZ	xyz(14.2065, 17.0947, 36.2622)
Luminance	0.1710 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237BA1 #A14923

analogous

#23A188 #237BA1 #233CA1

triadic

#237BA1 #A1237B #7BA123

tetradic

#237BA1 #8823A1 #A14923 #3CA123

square

#237BA1 #8823A1 #A14923 #3CA123

split-complementary

#237BA1 #A1233C #A18823

monochromatic

#0D2E3C #18556F #237BA1 #2FA1D2 #62B8DD

Accessibility & contrast

On white

4.75

#237BA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#237BA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237BA1

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237BA1	#FFFFFF	#000000	##FFFFFF
##237BA1	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687AA3

Deuteranopia (green-blind)

#576EA0

Tritanopia (blue-blind)

#008588

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #237ba1;
/* rgb */ color: rgb(35, 123, 161);
/* oklch */ color: oklch(55.0% 0.099 231.7);

Tailwind

colors: {
  custom: {
    50: '#72a1bd',
    500: '#237ba1',
    950: '#000000',
  },
}

SCSS

$custom: #237ba1;
$custom-light: #72a1bd;
$custom-dark: #000000;

JSON

{
  "hex": "#237ba1",
  "rgb": {
    "r": 35,
    "g": 123,
    "b": 161
  },
  "hsl": {
    "h": 198.095,
    "s": 64.286,
    "l": 38.431
  },
  "oklch": {
    "l": 0.54966,
    "c": 0.09913,
    "h": 231.7
  },
  "luminance": 0.17096
}

Semantic roles & 50–950 ramp

primary

#237BA1

secondary

#C27C5E

accent

#7341E7

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #237BA1

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

Preview Lab → · Contrast checker → · Palette generator →