#237DA9#237DA9

#237DA9 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.9% C 0.106 H 235.1°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#237DA9
RGB	rgb(35, 125, 169)
HSL	hsl(200, 66%, 40%)
HSV	hsv(200, 79%, 66%)
CMYK	cmyk(79.3%, 26%, 0%, 33.7%)
CIE-LAB	lab(49.36, -10.41, -30.77)
CIE-LCH	lch(49.36, 32.48, 251.31°)
OKLab	oklab(55.87% -0.0605 -0.0868)
OKLCH	oklch(55.87% 0.106 235.1)
XYZ	xyz(15.1853, 17.8873, 40.1807)
Luminance	0.1789 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237DA9 #A94F23

analogous

#23A992 #237DA9 #233AA9

triadic

#237DA9 #A9237D #7DA923

tetradic

#237DA9 #9223A9 #A94F23 #3AA923

square

#237DA9 #9223A9 #A94F23 #3AA923

split-complementary

#237DA9 #A9233A #A99223

monochromatic

#0E3244 #195876 #237DA9 #34A0D5 #67B8DF

Accessibility & contrast

On white

4.59

#237DA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#237DA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237DA9

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237DA9	#FFFFFF	#000000	##FFFFFF
##237DA9	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687CAB

Deuteranopia (green-blind)

#5670A8

Tritanopia (blue-blind)

#00888C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #237da9;
/* rgb */ color: rgb(35, 125, 169);
/* oklch */ color: oklch(55.9% 0.106 235.1);

Tailwind

colors: {
  custom: {
    50: '#73a2c2',
    500: '#237da9',
    950: '#000000',
  },
}

SCSS

$custom: #237da9;
$custom-light: #73a2c2;
$custom-dark: #000000;

JSON

{
  "hex": "#237da9",
  "rgb": {
    "r": 35,
    "g": 125,
    "b": 169
  },
  "hsl": {
    "h": 199.701,
    "s": 65.686,
    "l": 40
  },
  "oklch": {
    "l": 0.55866,
    "c": 0.10585,
    "h": 235.1
  },
  "luminance": 0.17889
}

Semantic roles & 50–950 ramp

primary

#237DA9

secondary

#C58363

accent

#773FE9

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #237DA9

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

Preview Lab → · Contrast checker → · Palette generator →