#21537D#21537D

#21537D is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.9% C 0.088 H 247.1°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#21537D
RGB	rgb(33, 83, 125)
HSL	hsl(207, 58%, 31%)
HSV	hsv(207, 74%, 49%)
CMYK	cmyk(73.6%, 33.6%, 0%, 51%)
CIE-LAB	lab(33.96, -1.65, -28.58)
CIE-LCH	lch(33.96, 28.63, 266.69°)
OKLab	oklab(42.94% -0.0342 -0.081)
OKLCH	oklch(42.94% 0.088 247.1)
XYZ	xyz(7.4207, 7.9897, 20.5491)
Luminance	0.0799 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21537D #7D4B21

analogous

#217D79 #21537D #21257D

triadic

#21537D #7D2153 #537D21

tetradic

#21537D #79217D #7D4B21 #257D21

square

#21537D #79217D #7D4B21 #257D21

split-complementary

#21537D #7D2125 #7D7921

monochromatic

#07131C #14334D #21537D #2E73AD #4992CF

Accessibility & contrast

On white

8.08

#21537D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#21537D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21537D

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21537D	#FFFFFF	#000000	##FFFFFF
##21537D	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40557F

Deuteranopia (green-blind)

#334C7C

Tritanopia (blue-blind)

#005D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #21537d;
/* rgb */ color: rgb(33, 83, 125);
/* oklch */ color: oklch(42.9% 0.088 247.1);

Tailwind

colors: {
  custom: {
    50: '#6983a3',
    500: '#21537d',
    950: '#000000',
  },
}

SCSS

$custom: #21537d;
$custom-light: #6983a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21537d",
  "rgb": {
    "r": 33,
    "g": 83,
    "b": 125
  },
  "hsl": {
    "h": 207.391,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.42939,
    "c": 0.08793,
    "h": 247.1
  },
  "luminance": 0.07991
}

Semantic roles & 50–950 ramp

primary

#21537D

secondary

#B0784A

accent

#8D46E1

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #21537D

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

Preview Lab → · Contrast checker → · Palette generator →