#237E9B#237E9B

#237E9B is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.4% C 0.093 H 224.1°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#237E9B
RGB	rgb(35, 126, 155)
HSL	hsl(195, 63%, 37%)
HSV	hsv(195, 77%, 61%)
CMYK	cmyk(77.4%, 18.7%, 0%, 39.2%)
CIE-LAB	lab(49.06, -15.95, -23.07)
CIE-LCH	lch(49.06, 28.05, 235.34°)
OKLab	oklab(55.43% -0.0667 -0.0646)
OKLCH	oklch(55.43% 0.093 224.1)
XYZ	xyz(14.0679, 17.6439, 33.6682)
Luminance	0.1765 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237E9B #9B4023

analogous

#239B7C #237E9B #23429B

triadic

#237E9B #9B237E #7E9B23

tetradic

#237E9B #7C239B #9B4023 #429B23

square

#237E9B #7C239B #9B4023 #429B23

split-complementary

#237E9B #9B2342 #9B7C23

monochromatic

#0C2D37 #185569 #237E9B #2EA7CD #5EBCDB

Accessibility & contrast

On white

4.64

#237E9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#237E9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237E9B

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237E9B	#FFFFFF	#000000	##FFFFFF
##237E9B	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7B9C

Deuteranopia (green-blind)

#5E709B

Tritanopia (blue-blind)

#008787

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #237e9b;
/* rgb */ color: rgb(35, 126, 155);
/* oklch */ color: oklch(55.4% 0.093 224.1);

Tailwind

colors: {
  custom: {
    50: '#71a3b8',
    500: '#237e9b',
    950: '#000000',
  },
}

SCSS

$custom: #237e9b;
$custom-light: #71a3b8;
$custom-dark: #000000;

JSON

{
  "hex": "#237e9b",
  "rgb": {
    "r": 35,
    "g": 126,
    "b": 155
  },
  "hsl": {
    "h": 194.5,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.55427,
    "c": 0.09292,
    "h": 224.1
  },
  "luminance": 0.17646
}

Semantic roles & 50–950 ramp

primary

#237E9B

secondary

#BF735A

accent

#6942E6

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #237E9B

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

Preview Lab → · Contrast checker → · Palette generator →