#21677B#21677B

#21677B is a mid, moderate cyan. Relative luminance 0.115; OKLCH L 48.0% C 0.075 H 220.7°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#21677B
RGB	rgb(33, 103, 123)
HSL	hsl(193, 58%, 31%)
HSV	hsv(193, 73%, 48%)
CMYK	cmyk(73.2%, 16.3%, 0%, 51.8%)
CIE-LAB	lab(40.33, -14.49, -17.44)
CIE-LCH	lch(40.33, 22.68, 230.29°)
OKLab	oklab(47.98% -0.0566 -0.0487)
OKLCH	oklch(47.98% 0.075 220.7)
XYZ	xyz(9.0511, 11.4529, 20.4687)
Luminance	0.1145 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21677B #7B3521

analogous

#217B62 #21677B #213A7B

triadic

#21677B #7B2167 #677B21

tetradic

#21677B #62217B #7B3521 #3A7B21

square

#21677B #62217B #7B3521 #3A7B21

split-complementary

#21677B #7B213A #7B6221

monochromatic

#07161A #143F4B #21677B #2E8FAB #48B0CE

Accessibility & contrast

On white

6.38

#21677B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#21677B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21677B

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21677B	#FFFFFF	#000000	##FFFFFF
##21677B	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B647C

Deuteranopia (green-blind)

#4E5B7B

Tritanopia (blue-blind)

#006D6D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #21677b;
/* rgb */ color: rgb(33, 103, 123);
/* oklch */ color: oklch(48.0% 0.075 220.7);

Tailwind

colors: {
  custom: {
    50: '#6a92a1',
    500: '#21677b',
    950: '#000000',
  },
}

SCSS

$custom: #21677b;
$custom-light: #6a92a1;
$custom-dark: #000000;

JSON

{
  "hex": "#21677b",
  "rgb": {
    "r": 33,
    "g": 103,
    "b": 123
  },
  "hsl": {
    "h": 193.333,
    "s": 57.692,
    "l": 30.588
  },
  "oklch": {
    "l": 0.47976,
    "c": 0.07467,
    "h": 220.7
  },
  "luminance": 0.11454
}

Semantic roles & 50–950 ramp

primary

#21677B

secondary

#AE604A

accent

#6947E1

background

#F6F9F9

surface

#ECF1F2

border

#C7CBCC

text

#070D0F

muted

#7A7E7E

Preview Lab

Preview with #21677B

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

Preview Lab → · Contrast checker → · Palette generator →