#21577F#21577F

#21577F is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.1% C 0.087 H 244.2°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#21577F
RGB	rgb(33, 87, 127)
HSL	hsl(206, 59%, 31%)
HSV	hsv(206, 74%, 50%)
CMYK	cmyk(74%, 31.5%, 0%, 50.2%)
CIE-LAB	lab(35.34, -3.43, -27.64)
CIE-LCH	lch(35.34, 27.85, 262.93°)
OKLab	oklab(44.06% -0.0378 -0.0782)
OKLCH	oklch(44.06% 0.087 244.2)
XYZ	xyz(7.8647, 8.6712, 21.3338)
Luminance	0.0867 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21577F #7F4921

analogous

#217F78 #21577F #21287F

triadic

#21577F #7F2157 #577F21

tetradic

#21577F #78217F #7F4921 #287F21

square

#21577F #78217F #7F4921 #287F21

split-complementary

#21577F #7F2128 #7F7821

monochromatic

#08141E #14364E #21577F #2E78B0 #4A97D0

Accessibility & contrast

On white

7.68

#21577F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#21577F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21577F

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21577F	#FFFFFF	#000000	##FFFFFF
##21577F	1.00	7.68	2.73	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455881

Deuteranopia (green-blind)

#384F7E

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21577f;
/* rgb */ color: rgb(33, 87, 127);
/* oklch */ color: oklch(44.1% 0.087 244.2);

Tailwind

colors: {
  custom: {
    50: '#6986a4',
    500: '#21577f',
    950: '#000000',
  },
}

SCSS

$custom: #21577f;
$custom-light: #6986a4;
$custom-dark: #000000;

JSON

{
  "hex": "#21577f",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 127
  },
  "hsl": {
    "h": 205.532,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.44063,
    "c": 0.08687,
    "h": 244.2
  },
  "luminance": 0.08672
}

Semantic roles & 50–950 ramp

primary

#21577F

secondary

#B2764A

accent

#8846E2

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #21577F

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

Preview Lab → · Contrast checker → · Palette generator →