#21819A#21819A

#21819A is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.1% C 0.092 H 219.8°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#21819A
RGB	rgb(33, 129, 154)
HSL	hsl(192, 65%, 37%)
HSV	hsv(192, 79%, 60%)
CMYK	cmyk(78.6%, 16.2%, 0%, 39.6%)
CIE-LAB	lab(49.92, -18.18, -21.16)
CIE-LCH	lch(49.92, 27.89, 229.34°)
OKLab	oklab(56.09% -0.071 -0.0592)
OKLCH	oklch(56.09% 0.092 219.8)
XYZ	xyz(14.3077, 18.3552, 33.3544)
Luminance	0.1836 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21819A #9A3A21

analogous

#219A77 #21819A #21449A

triadic

#21819A #9A2181 #819A21

tetradic

#21819A #77219A #9A3A21 #449A21

square

#21819A #77219A #9A3A21 #449A21

split-complementary

#21819A #9A2144 #9A7721

monochromatic

#0B2D35 #165768 #21819A #2CABCC #5AC1DC

Accessibility & contrast

On white

4.50

#21819A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#21819A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #21819A

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21819A	#FFFFFF	#000000	##000000
##21819A	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#727D9B

Deuteranopia (green-blind)

#62729A

Tritanopia (blue-blind)

#008989

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #21819a;
/* rgb */ color: rgb(33, 129, 154);
/* oklch */ color: oklch(56.1% 0.092 219.8);

Tailwind

colors: {
  custom: {
    50: '#71a5b7',
    500: '#21819a',
    950: '#000000',
  },
}

SCSS

$custom: #21819a;
$custom-light: #71a5b7;
$custom-dark: #000000;

JSON

{
  "hex": "#21819a",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 154
  },
  "hsl": {
    "h": 192.397,
    "s": 64.706,
    "l": 36.667
  },
  "oklch": {
    "l": 0.56094,
    "c": 0.09243,
    "h": 219.8
  },
  "luminance": 0.18357
}

Semantic roles & 50–950 ramp

primary

#21819A

secondary

#C06D57

accent

#6340E8

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #21819A

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

Preview Lab → · Contrast checker → · Palette generator →