#21597D#21597D

#21597D is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.5% C 0.083 H 240.6°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#21597D
RGB	rgb(33, 89, 125)
HSL	hsl(203, 58%, 31%)
HSV	hsv(203, 74%, 49%)
CMYK	cmyk(73.6%, 28.8%, 0%, 51%)
CIE-LAB	lab(35.88, -5.43, -25.56)
CIE-LCH	lch(35.88, 26.13, 258.00°)
OKLab	oklab(44.46% -0.0406 -0.0722)
OKLCH	oklch(44.46% 0.083 240.6)
XYZ	xyz(7.8998, 8.9479, 20.7088)
Luminance	0.0895 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21597D #7D4521

analogous

#217D73 #21597D #212B7D

triadic

#21597D #7D2159 #597D21

tetradic

#21597D #73217D #7D4521 #2B7D21

square

#21597D #73217D #7D4521 #2B7D21

split-complementary

#21597D #7D212B #7D7321

monochromatic

#07141C #14374D #21597D #2E7BAD #499BCF

Accessibility & contrast

On white

7.53

#21597D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#21597D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21597D

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21597D	#FFFFFF	#000000	##FFFFFF
##21597D	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48597F

Deuteranopia (green-blind)

#3C507C

Tritanopia (blue-blind)

#006265

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #21597d;
/* rgb */ color: rgb(33, 89, 125);
/* oklch */ color: oklch(44.5% 0.083 240.6);

Tailwind

colors: {
  custom: {
    50: '#6987a3',
    500: '#21597d',
    950: '#000000',
  },
}

SCSS

$custom: #21597d;
$custom-light: #6987a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21597d",
  "rgb": {
    "r": 33,
    "g": 89,
    "b": 125
  },
  "hsl": {
    "h": 203.478,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.44457,
    "c": 0.08279,
    "h": 240.6
  },
  "luminance": 0.08949
}

Semantic roles & 50–950 ramp

primary

#21597D

secondary

#B0724A

accent

#8346E1

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #21597D

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

Preview Lab → · Contrast checker → · Palette generator →