#237DD4#237DD4

#237DD4 is a mid, vivid cyan. Relative luminance 0.198; OKLCH L 58.3% C 0.156 H 252.0°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#237DD4
RGB	rgb(35, 125, 212)
HSL	hsl(209, 72%, 48%)
HSV	hsv(209, 83%, 83%)
CMYK	cmyk(83.5%, 41%, 0%, 16.9%)
CIE-LAB	lab(51.58, 5.62, -51.92)
CIE-LCH	lch(51.58, 52.22, 276.18°)
OKLab	oklab(58.34% -0.0482 -0.1486)
OKLCH	oklch(58.34% 0.156 252)
XYZ	xyz(19.9059, 19.7755, 65.0425)
Luminance	0.1978 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237DD4 #D47A23

analogous

#23D4D2 #237DD4 #2324D4

triadic

#237DD4 #D4237D #7DD423

tetradic

#237DD4 #D223D4 #D47A23 #24D423

square

#237DD4 #D223D4 #D47A23 #24D423

split-complementary

#237DD4 #D42324 #D4D223

monochromatic

#123F6B #1A5E9F #237DD4 #529BE2 #86BAEB

Accessibility & contrast

On white

4.24

#237DD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#237DD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237DD4

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237DD4	#FFFFFF	#000000	##000000
##237DD4	1.00	4.24	4.96	4.96
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5283D7

Deuteranopia (green-blind)

#3374D2

Tritanopia (blue-blind)

#00929E

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #237dd4;
/* rgb */ color: rgb(35, 125, 212);
/* oklch */ color: oklch(58.3% 0.156 252.0);

Tailwind

colors: {
  custom: {
    50: '#7ca2e2',
    500: '#237dd4',
    950: '#000000',
  },
}

SCSS

$custom: #237dd4;
$custom-light: #7ca2e2;
$custom-dark: #000000;

JSON

{
  "hex": "#237dd4",
  "rgb": {
    "r": 35,
    "g": 125,
    "b": 212
  },
  "hsl": {
    "h": 209.492,
    "s": 71.66,
    "l": 48.431
  },
  "oklch": {
    "l": 0.58344,
    "c": 0.15625,
    "h": 252
  },
  "luminance": 0.19778
}

Semantic roles & 50–950 ramp

primary

#237DD4

secondary

#D4A97E

accent

#9239EE

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #237DD4

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

Preview Lab → · Contrast checker → · Palette generator →