#237CA3#237CA3

#237CA3 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.3% C 0.101 H 232.1°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#237CA3
RGB	rgb(35, 124, 163)
HSL	hsl(198, 65%, 39%)
HSV	hsv(198, 79%, 64%)
CMYK	cmyk(78.5%, 23.9%, 0%, 36.1%)
CIE-LAB	lab(48.78, -12.00, -28.18)
CIE-LCH	lch(48.78, 30.63, 246.93°)
OKLab	oklab(55.31% -0.0617 -0.0793)
OKLCH	oklch(55.31% 0.101 232.1)
XYZ	xyz(14.5090, 17.4152, 37.2400)
Luminance	0.1742 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237CA3 #A34A23

analogous

#23A38A #237CA3 #233CA3

triadic

#237CA3 #A3237C #7CA323

tetradic

#237CA3 #8A23A3 #A34A23 #3CA323

square

#237CA3 #8A23A3 #A34A23 #3CA323

split-complementary

#237CA3 #A3233C #A38A23

monochromatic

#0D2F3E #185671 #237CA3 #31A1D3 #63B8DD

Accessibility & contrast

On white

4.68

#237CA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#237CA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237CA3

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237CA3	#FFFFFF	#000000	##FFFFFF
##237CA3	1.00	4.68	4.48	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA5

Deuteranopia (green-blind)

#576FA2

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237ca3;
/* rgb */ color: rgb(35, 124, 163);
/* oklch */ color: oklch(55.3% 0.101 232.1);

Tailwind

colors: {
  custom: {
    50: '#72a1be',
    500: '#237ca3',
    950: '#000000',
  },
}

SCSS

$custom: #237ca3;
$custom-light: #72a1be;
$custom-dark: #000000;

JSON

{
  "hex": "#237ca3",
  "rgb": {
    "r": 35,
    "g": 124,
    "b": 163
  },
  "hsl": {
    "h": 198.281,
    "s": 64.646,
    "l": 38.824
  },
  "oklch": {
    "l": 0.55314,
    "c": 0.10052,
    "h": 232.1
  },
  "luminance": 0.17417
}

Semantic roles & 50–950 ramp

primary

#237CA3

secondary

#C37D5F

accent

#7340E8

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #237CA3

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

Preview Lab → · Contrast checker → · Palette generator →