#237DA1#237DA1

#237DA1 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.5% C 0.098 H 229.8°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#237DA1
RGB	rgb(35, 125, 161)
HSL	hsl(197, 64%, 38%)
HSV	hsv(197, 78%, 63%)
CMYK	cmyk(78.3%, 22.4%, 0%, 36.9%)
CIE-LAB	lab(49.00, -13.28, -26.66)
CIE-LCH	lch(49.00, 29.79, 243.52°)
OKLab	oklab(55.46% -0.0634 -0.075)
OKLCH	oklch(55.46% 0.098 229.8)
XYZ	xyz(14.4572, 17.5960, 36.3457)
Luminance	0.1760 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237DA1 #A14723

analogous

#23A186 #237DA1 #233EA1

triadic

#237DA1 #A1237D #7DA123

tetradic

#237DA1 #8623A1 #A14723 #3EA123

square

#237DA1 #8623A1 #A14723 #3EA123

split-complementary

#237DA1 #A1233E #A18623

monochromatic

#0D2F3C #18566F #237DA1 #2FA3D2 #62BADD

Accessibility & contrast

On white

4.65

#237DA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#237DA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237DA1

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237DA1	#FFFFFF	#000000	##FFFFFF
##237DA1	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7BA3

Deuteranopia (green-blind)

#5A6FA0

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237da1;
/* rgb */ color: rgb(35, 125, 161);
/* oklch */ color: oklch(55.5% 0.098 229.8);

Tailwind

colors: {
  custom: {
    50: '#72a2bd',
    500: '#237da1',
    950: '#000000',
  },
}

SCSS

$custom: #237da1;
$custom-light: #72a2bd;
$custom-dark: #000000;

JSON

{
  "hex": "#237da1",
  "rgb": {
    "r": 35,
    "g": 125,
    "b": 161
  },
  "hsl": {
    "h": 197.143,
    "s": 64.286,
    "l": 38.431
  },
  "oklch": {
    "l": 0.55463,
    "c": 0.09821,
    "h": 229.8
  },
  "luminance": 0.17598
}

Semantic roles & 50–950 ramp

primary

#237DA1

secondary

#C27A5E

accent

#7041E7

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #237DA1

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

Preview Lab → · Contrast checker → · Palette generator →