#21878B#21878B

#21878B is a mid, moderate teal. Relative luminance 0.195; OKLCH L 57.0% C 0.088 H 199.0°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#21878B
RGB	rgb(33, 135, 139)
HSL	hsl(182, 62%, 34%)
HSV	hsv(182, 76%, 55%)
CMYK	cmyk(76.3%, 2.9%, 0%, 45.5%)
CIE-LAB	lab(51.28, -26.27, -10.34)
CIE-LCH	lch(51.28, 28.24, 201.49°)
OKLab	oklab(57.01% -0.0836 -0.0287)
OKLCH	oklch(57.01% 0.088 199)
XYZ	xyz(13.9493, 19.5137, 27.4524)
Luminance	0.1951 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21878B #8B2521

analogous

#218B5A #21878B #21528B

triadic

#21878B #8B2187 #878B21

tetradic

#21878B #5A218B #8B2521 #528B21

square

#21878B #5A218B #8B2521 #528B21

split-complementary

#21878B #8B2152 #8B5A21

monochromatic

#0A2728 #15575A #21878B #2DB7BC #51D1D6

Accessibility & contrast

On white

4.28

#21878B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#21878B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #21878B

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21878B	#FFFFFF	#000000	##000000
##21878B	1.00	4.28	4.90	4.90
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D818B

Deuteranopia (green-blind)

#6E758C

Tritanopia (blue-blind)

#008C88

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #21878b;
/* rgb */ color: rgb(33, 135, 139);
/* oklch */ color: oklch(57.0% 0.088 199.0);

Tailwind

colors: {
  custom: {
    50: '#6faaac',
    500: '#21878b',
    950: '#000000',
  },
}

SCSS

$custom: #21878b;
$custom-light: #6faaac;
$custom-dark: #000000;

JSON

{
  "hex": "#21878b",
  "rgb": {
    "r": 33,
    "g": 135,
    "b": 139
  },
  "hsl": {
    "h": 182.264,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.57009,
    "c": 0.08845,
    "h": 199
  },
  "luminance": 0.19515
}

Semantic roles & 50–950 ramp

primary

#21878B

secondary

#B9534F

accent

#4943E5

background

#F7FAFA

surface

#EDF4F4

border

#C8CECE

text

#091010

muted

#7B7F7F

Preview Lab

Preview with #21878B

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

Preview Lab → · Contrast checker → · Palette generator →