#2173A8#2173A8

#2173A8 is a mid, moderate cyan. Relative luminance 0.154; OKLCH L 53.3% C 0.113 H 242.3°. Best body text is #FFFFFF at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#2173A8
RGB	rgb(33, 115, 168)
HSL	hsl(204, 67%, 39%)
HSV	hsv(204, 80%, 66%)
CMYK	cmyk(80.4%, 31.5%, 0%, 34.1%)
CIE-LAB	lab(46.19, -5.12, -35.15)
CIE-LCH	lch(46.19, 35.53, 261.71°)
OKLab	oklab(53.32% -0.0523 -0.0997)
OKLCH	oklch(53.32% 0.113 242.3)
XYZ	xyz(13.8230, 15.4103, 39.2841)
Luminance	0.1541 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2173A8 #A85621

analogous

#21A89A #2173A8 #212FA8

triadic

#2173A8 #A82173 #73A821

tetradic

#2173A8 #9A21A8 #A85621 #2FA821

square

#2173A8 #9A21A8 #A85621 #2FA821

split-complementary

#2173A8 #A8212F #A89A21

monochromatic

#0D2D42 #175075 #2173A8 #3095D6 #63AFE0

Accessibility & contrast

On white

5.14

#2173A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#2173A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2173A8

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2173A8	#FFFFFF	#000000	##FFFFFF
##2173A8	1.00	5.14	4.08	5.14
#FFFFFF	5.14	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A74AA

Deuteranopia (green-blind)

#4768A7

Tritanopia (blue-blind)

#008086

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #2173a8;
/* rgb */ color: rgb(33, 115, 168);
/* oklch */ color: oklch(53.3% 0.113 242.3);

Tailwind

colors: {
  custom: {
    50: '#729bc2',
    500: '#2173a8',
    950: '#000000',
  },
}

SCSS

$custom: #2173a8;
$custom-light: #729bc2;
$custom-dark: #000000;

JSON

{
  "hex": "#2173a8",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 168
  },
  "hsl": {
    "h": 203.556,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.53322,
    "c": 0.11259,
    "h": 242.3
  },
  "luminance": 0.15412
}

Semantic roles & 50–950 ramp

primary

#2173A8

secondary

#C5875F

accent

#813EEA

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #2173A8

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

Preview Lab → · Contrast checker → · Palette generator →