#2171A4#2171A4

#2171A4 is a mid, moderate cyan. Relative luminance 0.148; OKLCH L 52.6% C 0.110 H 241.9°. Best body text is #FFFFFF at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#2171A4
RGB	rgb(33, 113, 164)
HSL	hsl(203, 66%, 39%)
HSV	hsv(203, 80%, 64%)
CMYK	cmyk(79.9%, 31.1%, 0%, 35.7%)
CIE-LAB	lab(45.38, -5.42, -34.09)
CIE-LCH	lch(45.38, 34.52, 260.96°)
OKLab	oklab(52.61% -0.0517 -0.0966)
OKLCH	oklch(52.61% 0.11 241.9)
XYZ	xyz(13.2305, 14.8123, 37.2765)
Luminance	0.1481 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2171A4 #A45421

analogous

#21A495 #2171A4 #212FA4

triadic

#2171A4 #A42171 #71A421

tetradic

#2171A4 #9521A4 #A45421 #2FA421

square

#2171A4 #9521A4 #A45421 #2FA421

split-complementary

#2171A4 #A4212F #A49521

monochromatic

#0C2B3E #174E71 #2171A4 #2D94D5 #60AEDF

Accessibility & contrast

On white

5.30

#2171A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#2171A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2171A4

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2171A4	#FFFFFF	#000000	##FFFFFF
##2171A4	1.00	5.30	3.96	5.30
#FFFFFF	5.30	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5972A6

Deuteranopia (green-blind)

#4766A3

Tritanopia (blue-blind)

#007E83

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #2171a4;
/* rgb */ color: rgb(33, 113, 164);
/* oklch */ color: oklch(52.6% 0.110 241.9);

Tailwind

colors: {
  custom: {
    50: '#7199bf',
    500: '#2171a4',
    950: '#000000',
  },
}

SCSS

$custom: #2171a4;
$custom-light: #7199bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2171a4",
  "rgb": {
    "r": 33,
    "g": 113,
    "b": 164
  },
  "hsl": {
    "h": 203.359,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.52612,
    "c": 0.10959,
    "h": 241.9
  },
  "luminance": 0.14814
}

Semantic roles & 50–950 ramp

primary

#2171A4

secondary

#C4855D

accent

#813EE9

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090D12

muted

#7B7E81

Preview Lab

Preview with #2171A4

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

Preview Lab → · Contrast checker → · Palette generator →