#21739C#21739C

#21739C is a mid, moderate cyan. Relative luminance 0.150; OKLCH L 52.7% C 0.099 H 235.5°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#21739C
RGB	rgb(33, 115, 156)
HSL	hsl(200, 65%, 37%)
HSV	hsv(200, 79%, 61%)
CMYK	cmyk(78.8%, 26.3%, 0%, 38.8%)
CIE-LAB	lab(45.61, -9.57, -29.01)
CIE-LCH	lch(45.61, 30.55, 251.74°)
OKLab	oklab(52.67% -0.0563 -0.0819)
OKLCH	oklch(52.67% 0.099 235.5)
XYZ	xyz(12.7563, 14.9836, 33.6659)
Luminance	0.1499 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21739C #9C4A21

analogous

#219C88 #21739C #21369C

triadic

#21739C #9C2173 #739C21

tetradic

#21739C #88219C #9C4A21 #369C21

square

#21739C #88219C #9C4A21 #369C21

split-complementary

#21739C #9C2136 #9C8821

monochromatic

#0C2937 #164E69 #21739C #2C98CF #5BB1DC

Accessibility & contrast

On white

5.25

#21739C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#21739C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21739C

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21739C	#FFFFFF	#000000	##FFFFFF
##21739C	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)

#5F729E

Deuteranopia (green-blind)

#4F679B

Tritanopia (blue-blind)

#007E81

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #21739c;
/* rgb */ color: rgb(33, 115, 156);
/* oklch */ color: oklch(52.7% 0.099 235.5);

Tailwind

colors: {
  custom: {
    50: '#709bb9',
    500: '#21739c',
    950: '#000000',
  },
}

SCSS

$custom: #21739c;
$custom-light: #709bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#21739c",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 156
  },
  "hsl": {
    "h": 200,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.52672,
    "c": 0.09935,
    "h": 235.5
  },
  "luminance": 0.14985
}

Semantic roles & 50–950 ramp

primary

#21739C

secondary

#C17B58

accent

#7840E8

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #21739C

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

Preview Lab → · Contrast checker → · Palette generator →