#237CA1#237CA1

#237CA1 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.2% C 0.099 H 230.7°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#237CA1
RGB	rgb(35, 124, 161)
HSL	hsl(198, 64%, 38%)
HSV	hsv(198, 78%, 63%)
CMYK	cmyk(78.3%, 23%, 0%, 36.9%)
CIE-LAB	lab(48.69, -12.71, -27.15)
CIE-LCH	lch(48.69, 29.98, 244.90°)
OKLab	oklab(55.21% -0.0624 -0.0764)
OKLCH	oklch(55.21% 0.099 230.7)
XYZ	xyz(14.3312, 17.3441, 36.3037)
Luminance	0.1735 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237CA1 #A14823

analogous

#23A187 #237CA1 #233DA1

triadic

#237CA1 #A1237C #7CA123

tetradic

#237CA1 #8723A1 #A14823 #3DA123

square

#237CA1 #8723A1 #A14823 #3DA123

split-complementary

#237CA1 #A1233D #A18723

monochromatic

#0D2F3C #18556F #237CA1 #2FA2D2 #62B9DD

Accessibility & contrast

On white

4.70

#237CA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#237CA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237CA1

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237CA1	#FFFFFF	#000000	##FFFFFF
##237CA1	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697AA3

Deuteranopia (green-blind)

#586EA0

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237ca1;
/* rgb */ color: rgb(35, 124, 161);
/* oklch */ color: oklch(55.2% 0.099 230.7);

Tailwind

colors: {
  custom: {
    50: '#72a2bd',
    500: '#237ca1',
    950: '#000000',
  },
}

SCSS

$custom: #237ca1;
$custom-light: #72a2bd;
$custom-dark: #000000;

JSON

{
  "hex": "#237ca1",
  "rgb": {
    "r": 35,
    "g": 124,
    "b": 161
  },
  "hsl": {
    "h": 197.619,
    "s": 64.286,
    "l": 38.431
  },
  "oklch": {
    "l": 0.55214,
    "c": 0.09865,
    "h": 230.7
  },
  "luminance": 0.17346
}

Semantic roles & 50–950 ramp

primary

#237CA1

secondary

#C27B5E

accent

#7141E7

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #237CA1

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

Preview Lab → · Contrast checker → · Palette generator →