#21597C#21597C

#21597C is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.4% C 0.082 H 239.9°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#21597C
RGB	rgb(33, 89, 124)
HSL	hsl(203, 58%, 31%)
HSV	hsv(203, 73%, 49%)
CMYK	cmyk(73.4%, 28.2%, 0%, 51.4%)
CIE-LAB	lab(35.83, -5.81, -25.02)
CIE-LCH	lch(35.83, 25.69, 256.93°)
OKLab	oklab(44.4% -0.041 -0.0706)
OKLCH	oklch(44.4% 0.082 239.9)
XYZ	xyz(7.8363, 8.9225, 20.3741)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21597C #7C4421

analogous

#217C71 #21597C #212B7C

triadic

#21597C #7C2159 #597C21

tetradic

#21597C #71217C #7C4421 #2B7C21

square

#21597C #71217C #7C4421 #2B7C21

split-complementary

#21597C #7C212B #7C7121

monochromatic

#07141B #14364C #21597C #2E7CAC #499BCF

Accessibility & contrast

On white

7.54

#21597C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#21597C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21597C

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21597C	#FFFFFF	#000000	##FFFFFF
##21597C	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49597E

Deuteranopia (green-blind)

#3C507B

Tritanopia (blue-blind)

#006265

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #21597c;
/* rgb */ color: rgb(33, 89, 124);
/* oklch */ color: oklch(44.4% 0.082 239.9);

Tailwind

colors: {
  custom: {
    50: '#6987a2',
    500: '#21597c',
    950: '#000000',
  },
}

SCSS

$custom: #21597c;
$custom-light: #6987a2;
$custom-dark: #000000;

JSON

{
  "hex": "#21597c",
  "rgb": {
    "r": 33,
    "g": 89,
    "b": 124
  },
  "hsl": {
    "h": 203.077,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.44402,
    "c": 0.08161,
    "h": 239.9
  },
  "luminance": 0.08923
}

Semantic roles & 50–950 ramp

primary

#21597C

secondary

#AF714A

accent

#8247E1

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #21597C

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

Preview Lab → · Contrast checker → · Palette generator →