#2171A8#2171A8

#2171A8 is a mid, moderate cyan. Relative luminance 0.150; OKLCH L 52.8% C 0.114 H 243.8°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#2171A8
RGB	rgb(33, 113, 168)
HSL	hsl(204, 67%, 39%)
HSV	hsv(204, 80%, 66%)
CMYK	cmyk(80.4%, 32.7%, 0%, 34.1%)
CIE-LAB	lab(45.58, -3.92, -36.12)
CIE-LCH	lch(45.58, 36.33, 263.81°)
OKLab	oklab(52.84% -0.0504 -0.1026)
OKLCH	oklch(52.84% 0.114 243.8)
XYZ	xyz(13.5975, 14.9591, 39.2089)
Luminance	0.1496 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2171A8 #A85821

analogous

#21A89B #2171A8 #212EA8

triadic

#2171A8 #A82171 #71A821

tetradic

#2171A8 #9B21A8 #A85821 #2EA821

square

#2171A8 #9B21A8 #A85821 #2EA821

split-complementary

#2171A8 #A8212E #A89B21

monochromatic

#0D2C42 #174F75 #2171A8 #3093D6 #63ADE0

Accessibility & contrast

On white

5.26

#2171A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#2171A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2171A8

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2171A8	#FFFFFF	#000000	##FFFFFF
##2171A8	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5773AA

Deuteranopia (green-blind)

#4466A7

Tritanopia (blue-blind)

#007E85

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #2171a8;
/* rgb */ color: rgb(33, 113, 168);
/* oklch */ color: oklch(52.8% 0.114 243.8);

Tailwind

colors: {
  custom: {
    50: '#7299c2',
    500: '#2171a8',
    950: '#000000',
  },
}

SCSS

$custom: #2171a8;
$custom-light: #7299c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2171a8",
  "rgb": {
    "r": 33,
    "g": 113,
    "b": 168
  },
  "hsl": {
    "h": 204.444,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.52838,
    "c": 0.11429,
    "h": 243.8
  },
  "luminance": 0.14961
}

Semantic roles & 50–950 ramp

primary

#2171A8

secondary

#C5895F

accent

#843EEA

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090D12

muted

#7B7E81

Preview Lab

Preview with #2171A8

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

Preview Lab → · Contrast checker → · Palette generator →