#237EA1#237EA1

#237EA1 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.7% C 0.098 H 228.8°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#237EA1
RGB	rgb(35, 126, 161)
HSL	hsl(197, 64%, 38%)
HSV	hsv(197, 78%, 63%)
CMYK	cmyk(78.3%, 21.7%, 0%, 36.9%)
CIE-LAB	lab(49.31, -13.84, -26.18)
CIE-LCH	lch(49.31, 29.62, 242.13°)
OKLab	oklab(55.71% -0.0644 -0.0736)
OKLCH	oklch(55.71% 0.098 228.8)
XYZ	xyz(14.5844, 17.8505, 36.3881)
Luminance	0.1785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237EA1 #A14623

analogous

#23A185 #237EA1 #233FA1

triadic

#237EA1 #A1237E #7EA123

tetradic

#237EA1 #8523A1 #A14623 #3FA123

square

#237EA1 #8523A1 #A14623 #3FA123

split-complementary

#237EA1 #A1233F #A18523

monochromatic

#0D2F3C #18576F #237EA1 #2FA5D2 #62BBDD

Accessibility & contrast

On white

4.59

#237EA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#237EA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237EA1

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237EA1	#FFFFFF	#000000	##FFFFFF
##237EA1	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7CA3

Deuteranopia (green-blind)

#5B70A1

Tritanopia (blue-blind)

#00888A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #237ea1;
/* rgb */ color: rgb(35, 126, 161);
/* oklch */ color: oklch(55.7% 0.098 228.8);

Tailwind

colors: {
  custom: {
    50: '#72a3bd',
    500: '#237ea1',
    950: '#000000',
  },
}

SCSS

$custom: #237ea1;
$custom-light: #72a3bd;
$custom-dark: #000000;

JSON

{
  "hex": "#237ea1",
  "rgb": {
    "r": 35,
    "g": 126,
    "b": 161
  },
  "hsl": {
    "h": 196.667,
    "s": 64.286,
    "l": 38.431
  },
  "oklch": {
    "l": 0.55713,
    "c": 0.0978,
    "h": 228.8
  },
  "luminance": 0.17852
}

Semantic roles & 50–950 ramp

primary

#237EA1

secondary

#C27A5E

accent

#6F41E7

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #237EA1

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

Preview Lab → · Contrast checker → · Palette generator →