#21739D#21739D

#21739D is a mid, moderate cyan. Relative luminance 0.150; OKLCH L 52.7% C 0.100 H 236.1°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#21739D
RGB	rgb(33, 115, 157)
HSL	hsl(200, 65%, 37%)
HSV	hsv(200, 79%, 62%)
CMYK	cmyk(79%, 26.8%, 0%, 38.4%)
CIE-LAB	lab(45.66, -9.21, -29.53)
CIE-LCH	lch(45.66, 30.93, 252.69°)
OKLab	oklab(52.73% -0.0559 -0.0834)
OKLCH	oklch(52.73% 0.1 236.1)
XYZ	xyz(12.8413, 15.0176, 34.1136)
Luminance	0.1502 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21739D #9D4B21

analogous

#219D89 #21739D #21359D

triadic

#21739D #9D2173 #739D21

tetradic

#21739D #89219D #9D4B21 #359D21

square

#21739D #89219D #9D4B21 #359D21

split-complementary

#21739D #9D2135 #9D8921

monochromatic

#0C2938 #164E6A #21739D #2C98D0 #5CB1DD

Accessibility & contrast

On white

5.25

#21739D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#21739D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21739D

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21739D	#FFFFFF	#000000	##FFFFFF
##21739D	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F739F

Deuteranopia (green-blind)

#4E679C

Tritanopia (blue-blind)

#007E81

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #21739d;
/* rgb */ color: rgb(33, 115, 157);
/* oklch */ color: oklch(52.7% 0.100 236.1);

Tailwind

colors: {
  custom: {
    50: '#709bba',
    500: '#21739d',
    950: '#000000',
  },
}

SCSS

$custom: #21739d;
$custom-light: #709bba;
$custom-dark: #000000;

JSON

{
  "hex": "#21739d",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 157
  },
  "hsl": {
    "h": 200.323,
    "s": 65.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.52725,
    "c": 0.10039,
    "h": 236.1
  },
  "luminance": 0.15019
}

Semantic roles & 50–950 ramp

primary

#21739D

secondary

#C17C59

accent

#7940E8

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #21739D

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

Preview Lab → · Contrast checker → · Palette generator →