#21577C#21577C

#21577C is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.9% C 0.083 H 242.2°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#21577C
RGB	rgb(33, 87, 124)
HSL	hsl(204, 58%, 31%)
HSV	hsv(204, 73%, 49%)
CMYK	cmyk(73.4%, 29.8%, 0%, 51.4%)
CIE-LAB	lab(35.19, -4.56, -26.03)
CIE-LCH	lch(35.19, 26.43, 260.06°)
OKLab	oklab(43.89% -0.0388 -0.0735)
OKLCH	oklch(43.89% 0.083 242.2)
XYZ	xyz(7.6721, 8.5941, 20.3194)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21577C #7C4621

analogous

#217C73 #21577C #21297C

triadic

#21577C #7C2157 #577C21

tetradic

#21577C #73217C #7C4621 #297C21

square

#21577C #73217C #7C4621 #297C21

split-complementary

#21577C #7C2129 #7C7321

monochromatic

#07131B #14354C #21577C #2E79AC #4998CF

Accessibility & contrast

On white

7.72

#21577C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#21577C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21577C

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21577C	#FFFFFF	#000000	##FFFFFF
##21577C	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46587E

Deuteranopia (green-blind)

#3A4F7B

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21577c;
/* rgb */ color: rgb(33, 87, 124);
/* oklch */ color: oklch(43.9% 0.083 242.2);

Tailwind

colors: {
  custom: {
    50: '#6986a2',
    500: '#21577c',
    950: '#000000',
  },
}

SCSS

$custom: #21577c;
$custom-light: #6986a2;
$custom-dark: #000000;

JSON

{
  "hex": "#21577c",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 124
  },
  "hsl": {
    "h": 204.396,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.43892,
    "c": 0.08314,
    "h": 242.2
  },
  "luminance": 0.08595
}

Semantic roles & 50–950 ramp

primary

#21577C

secondary

#AF734A

accent

#8547E1

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #21577C

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

Preview Lab → · Contrast checker → · Palette generator →