#237CA5#237CA5

#237CA5 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.4% C 0.102 H 233.5°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#237CA5
RGB	rgb(35, 124, 165)
HSL	hsl(199, 65%, 39%)
HSV	hsv(199, 79%, 65%)
CMYK	cmyk(78.8%, 24.8%, 0%, 35.3%)
CIE-LAB	lab(48.87, -11.28, -29.20)
CIE-LCH	lch(48.87, 31.31, 248.88°)
OKLab	oklab(55.42% -0.061 -0.0823)
OKLCH	oklch(55.42% 0.102 233.5)
XYZ	xyz(14.6896, 17.4875, 38.1912)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237CA5 #A54C23

analogous

#23A58D #237CA5 #233BA5

triadic

#237CA5 #A5237C #7CA523

tetradic

#237CA5 #8D23A5 #A54C23 #3BA523

square

#237CA5 #8D23A5 #A54C23 #3BA523

split-complementary

#237CA5 #A5233B #A58D23

monochromatic

#0E3040 #185673 #237CA5 #32A0D3 #64B8DE

Accessibility & contrast

On white

4.67

#237CA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#237CA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237CA5

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237CA5	#FFFFFF	#000000	##FFFFFF
##237CA5	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA7

Deuteranopia (green-blind)

#566FA4

Tritanopia (blue-blind)

#00878A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237ca5;
/* rgb */ color: rgb(35, 124, 165);
/* oklch */ color: oklch(55.4% 0.102 233.5);

Tailwind

colors: {
  custom: {
    50: '#73a1c0',
    500: '#237ca5',
    950: '#000000',
  },
}

SCSS

$custom: #237ca5;
$custom-light: #73a1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#237ca5",
  "rgb": {
    "r": 35,
    "g": 124,
    "b": 165
  },
  "hsl": {
    "h": 198.923,
    "s": 65,
    "l": 39.216
  },
  "oklch": {
    "l": 0.55415,
    "c": 0.10245,
    "h": 233.5
  },
  "luminance": 0.17489
}

Semantic roles & 50–950 ramp

primary

#237CA5

secondary

#C48060

accent

#7540E8

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090F12

muted

#7B7E81

Preview Lab

Preview with #237CA5

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

Preview Lab → · Contrast checker → · Palette generator →