#2173BA#2173BA

#2173BA is a mid, vivid cyan. Relative luminance 0.161; OKLCH L 54.4% C 0.134 H 249.5°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#2173BA
RGB	rgb(33, 115, 186)
HSL	hsl(208, 70%, 43%)
HSV	hsv(208, 82%, 73%)
CMYK	cmyk(82.3%, 38.2%, 0%, 27.1%)
CIE-LAB	lab(47.14, 1.70, -44.12)
CIE-LCH	lch(47.14, 44.15, 272.20°)
OKLab	oklab(54.38% -0.0471 -0.1259)
OKLCH	oklch(54.38% 0.134 249.5)
XYZ	xyz(15.6175, 16.1280, 48.7348)
Luminance	0.1613 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2173BA #BA6821

analogous

#21BAB4 #2173BA #2127BA

triadic

#2173BA #BA2173 #73BA21

tetradic

#2173BA #B421BA #BA6821 #27BA21

square

#2173BA #B421BA #BA6821 #27BA21

split-complementary

#2173BA #BA2127 #BAB421

monochromatic

#0F3352 #185386 #2173BA #3C92DC #70AFE6

Accessibility & contrast

On white

4.97

#2173BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#2173BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2173BA

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2173BA	#FFFFFF	#000000	##FFFFFF
##2173BA	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5177BD

Deuteranopia (green-blind)

#396AB9

Tritanopia (blue-blind)

#00848D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #2173ba;
/* rgb */ color: rgb(33, 115, 186);
/* oklch */ color: oklch(54.4% 0.134 249.5);

Tailwind

colors: {
  custom: {
    50: '#769acf',
    500: '#2173ba',
    950: '#000000',
  },
}

SCSS

$custom: #2173ba;
$custom-light: #769acf;
$custom-dark: #000000;

JSON

{
  "hex": "#2173ba",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 186
  },
  "hsl": {
    "h": 207.843,
    "s": 69.863,
    "l": 42.941
  },
  "oklch": {
    "l": 0.54382,
    "c": 0.13448,
    "h": 249.5
  },
  "luminance": 0.1613
}

Semantic roles & 50–950 ramp

primary

#2173BA

secondary

#CC986B

accent

#8E3BED

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #2173BA

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

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