#21577D#21577D

#21577D is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.9% C 0.084 H 242.9°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#21577D
RGB	rgb(33, 87, 125)
HSL	hsl(205, 58%, 31%)
HSV	hsv(205, 74%, 49%)
CMYK	cmyk(73.6%, 30.4%, 0%, 51%)
CIE-LAB	lab(35.24, -4.19, -26.57)
CIE-LCH	lch(35.24, 26.90, 261.05°)
OKLab	oklab(43.95% -0.0385 -0.0751)
OKLCH	oklch(43.95% 0.084 242.9)
XYZ	xyz(7.7356, 8.6195, 20.6541)
Luminance	0.0862 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21577D #7D4721

analogous

#217D75 #21577D #21297D

triadic

#21577D #7D2157 #577D21

tetradic

#21577D #75217D #7D4721 #297D21

square

#21577D #75217D #7D4721 #297D21

split-complementary

#21577D #7D2129 #7D7521

monochromatic

#07141C #14354D #21577D #2E79AD #4998CF

Accessibility & contrast

On white

7.71

#21577D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#21577D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21577D

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21577D	#FFFFFF	#000000	##FFFFFF
##21577D	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46587F

Deuteranopia (green-blind)

#394F7C

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21577d;
/* rgb */ color: rgb(33, 87, 125);
/* oklch */ color: oklch(43.9% 0.084 242.9);

Tailwind

colors: {
  custom: {
    50: '#6986a3',
    500: '#21577d',
    950: '#000000',
  },
}

SCSS

$custom: #21577d;
$custom-light: #6986a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21577d",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 125
  },
  "hsl": {
    "h": 204.783,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.43949,
    "c": 0.08437,
    "h": 242.9
  },
  "luminance": 0.0862
}

Semantic roles & 50–950 ramp

primary

#21577D

secondary

#B0744A

accent

#8646E1

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #21577D

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

Preview Lab → · Contrast checker → · Palette generator →