#2179A8#2179A8

#2179A8 is a mid, moderate cyan. Relative luminance 0.168; OKLCH L 54.8% C 0.108 H 237.6°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#2179A8
RGB	rgb(33, 121, 168)
HSL	hsl(201, 67%, 39%)
HSV	hsv(201, 80%, 66%)
CMYK	cmyk(80.4%, 28%, 0%, 34.1%)
CIE-LAB	lab(48.04, -8.67, -32.26)
CIE-LCH	lch(48.04, 33.40, 254.95°)
OKLab	oklab(54.79% -0.0579 -0.0912)
OKLCH	oklch(54.79% 0.108 237.6)
XYZ	xyz(14.5296, 16.8234, 39.5197)
Luminance	0.1683 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2179A8 #A85021

analogous

#21A894 #2179A8 #2136A8

triadic

#2179A8 #A82179 #79A821

tetradic

#2179A8 #9421A8 #A85021 #36A821

square

#2179A8 #9421A8 #A85021 #36A821

split-complementary

#2179A8 #A82136 #A89421

monochromatic

#0D2F42 #175475 #2179A8 #309CD6 #63B5E0

Accessibility & contrast

On white

4.81

#2179A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#2179A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2179A8

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2179A8	#FFFFFF	#000000	##FFFFFF
##2179A8	1.00	4.81	4.36	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6279AA

Deuteranopia (green-blind)

#506CA7

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #2179a8;
/* rgb */ color: rgb(33, 121, 168);
/* oklch */ color: oklch(54.8% 0.108 237.6);

Tailwind

colors: {
  custom: {
    50: '#729fc2',
    500: '#2179a8',
    950: '#000000',
  },
}

SCSS

$custom: #2179a8;
$custom-light: #729fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#2179a8",
  "rgb": {
    "r": 33,
    "g": 121,
    "b": 168
  },
  "hsl": {
    "h": 200.889,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.54786,
    "c": 0.10804,
    "h": 237.6
  },
  "luminance": 0.16825
}

Semantic roles & 50–950 ramp

primary

#2179A8

secondary

#C5835F

accent

#7A3EEA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #2179A8

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

Preview Lab → · Contrast checker → · Palette generator →