#2173A4#2173A4

#2173A4 is a mid, moderate cyan. Relative luminance 0.153; OKLCH L 53.1% C 0.108 H 240.3°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#2173A4
RGB	rgb(33, 115, 164)
HSL	hsl(202, 66%, 39%)
HSV	hsv(202, 80%, 64%)
CMYK	cmyk(79.9%, 29.9%, 0%, 35.7%)
CIE-LAB	lab(45.99, -6.62, -33.12)
CIE-LCH	lch(45.99, 33.78, 258.70°)
OKLab	oklab(53.1% -0.0535 -0.0938)
OKLCH	oklch(53.1% 0.108 240.3)
XYZ	xyz(13.4561, 15.2635, 37.3517)
Luminance	0.1527 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2173A4 #A45221

analogous

#21A493 #2173A4 #2131A4

triadic

#2173A4 #A42173 #73A421

tetradic

#2173A4 #9321A4 #A45221 #31A421

square

#2173A4 #9321A4 #A45221 #31A421

split-complementary

#2173A4 #A42131 #A49321

monochromatic

#0C2C3E #174F71 #2173A4 #2D96D5 #60B0DF

Accessibility & contrast

On white

5.18

#2173A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#2173A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2173A4

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2173A4	#FFFFFF	#000000	##FFFFFF
##2173A4	1.00	5.18	4.05	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C74A6

Deuteranopia (green-blind)

#4A68A3

Tritanopia (blue-blind)

#007F84

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #2173a4;
/* rgb */ color: rgb(33, 115, 164);
/* oklch */ color: oklch(53.1% 0.108 240.3);

Tailwind

colors: {
  custom: {
    50: '#719bbf',
    500: '#2173a4',
    950: '#000000',
  },
}

SCSS

$custom: #2173a4;
$custom-light: #719bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#2173a4",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 164
  },
  "hsl": {
    "h": 202.443,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.53101,
    "c": 0.10801,
    "h": 240.3
  },
  "luminance": 0.15265
}

Semantic roles & 50–950 ramp

primary

#2173A4

secondary

#C4835D

accent

#7E3EE9

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #2173A4

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

Preview Lab → · Contrast checker → · Palette generator →