#21757B#21757B

#21757B is a mid, moderate teal. Relative luminance 0.145; OKLCH L 51.7% C 0.078 H 202.1°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#21757B
RGB	rgb(33, 117, 123)
HSL	hsl(184, 58%, 31%)
HSV	hsv(184, 73%, 48%)
CMYK	cmyk(73.2%, 4.9%, 0%, 51.8%)
CIE-LAB	lab(44.91, -22.14, -10.49)
CIE-LCH	lch(44.91, 24.50, 205.35°)
OKLab	oklab(51.66% -0.0719 -0.0291)
OKLCH	oklch(51.66% 0.078 202.1)
XYZ	xyz(10.5621, 14.4747, 20.9723)
Luminance	0.1448 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21757B #7B2721

analogous

#217B54 #21757B #21487B

triadic

#21757B #7B2175 #757B21

tetradic

#21757B #54217B #7B2721 #487B21

square

#21757B #54217B #7B2721 #487B21

split-complementary

#21757B #7B2148 #7B5421

monochromatic

#07191A #14474B #21757B #2EA3AB #48C5CE

Accessibility & contrast

On white

5.39

#21757B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#21757B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21757B

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21757B	#FFFFFF	#000000	##FFFFFF
##21757B	1.00	5.39	3.90	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C707B

Deuteranopia (green-blind)

#5F667B

Tritanopia (blue-blind)

#007A77

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #21757b;
/* rgb */ color: rgb(33, 117, 123);
/* oklch */ color: oklch(51.7% 0.078 202.1);

Tailwind

colors: {
  custom: {
    50: '#6b9da1',
    500: '#21757b',
    950: '#000000',
  },
}

SCSS

$custom: #21757b;
$custom-light: #6b9da1;
$custom-dark: #000000;

JSON

{
  "hex": "#21757b",
  "rgb": {
    "r": 33,
    "g": 117,
    "b": 123
  },
  "hsl": {
    "h": 184,
    "s": 57.692,
    "l": 30.588
  },
  "oklch": {
    "l": 0.51661,
    "c": 0.07756,
    "h": 202.1
  },
  "luminance": 0.14476
}

Semantic roles & 50–950 ramp

primary

#21757B

secondary

#AE514A

accent

#5147E1

background

#F6F9F9

surface

#ECF2F2

border

#C7CCCC

text

#080E0E

muted

#7A7E7E

Preview Lab

Preview with #21757B

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

Preview Lab → · Contrast checker → · Palette generator →