#21739F#21739F

#21739F is a mid, moderate cyan. Relative luminance 0.151; OKLCH L 52.8% C 0.103 H 237.4°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#21739F
RGB	rgb(33, 115, 159)
HSL	hsl(201, 66%, 38%)
HSV	hsv(201, 79%, 62%)
CMYK	cmyk(79.2%, 27.7%, 0%, 37.6%)
CIE-LAB	lab(45.75, -8.47, -30.56)
CIE-LCH	lch(45.75, 31.71, 254.51°)
OKLab	oklab(52.83% -0.0552 -0.0864)
OKLCH	oklch(52.83% 0.103 237.4)
XYZ	xyz(13.0135, 15.0864, 35.0203)
Luminance	0.1509 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21739F #9F4D21

analogous

#219F8C #21739F #21349F

triadic

#21739F #9F2173 #739F21

tetradic

#21739F #8C219F #9F4D21 #349F21

square

#21739F #8C219F #9F4D21 #349F21

split-complementary

#21739F #9F2134 #9F8C21

monochromatic

#0C2A3A #164E6C #21739F #2C98D2 #5DB1DD

Accessibility & contrast

On white

5.23

#21739F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#21739F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21739F

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21739F	#FFFFFF	#000000	##FFFFFF
##21739F	1.00	5.23	4.02	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E73A1

Deuteranopia (green-blind)

#4D679E

Tritanopia (blue-blind)

#007E82

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #21739f;
/* rgb */ color: rgb(33, 115, 159);
/* oklch */ color: oklch(52.8% 0.103 237.4);

Tailwind

colors: {
  custom: {
    50: '#719bbb',
    500: '#21739f',
    950: '#000000',
  },
}

SCSS

$custom: #21739f;
$custom-light: #719bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#21739f",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 159
  },
  "hsl": {
    "h": 200.952,
    "s": 65.625,
    "l": 37.647
  },
  "oklch": {
    "l": 0.5283,
    "c": 0.10251,
    "h": 237.4
  },
  "luminance": 0.15088
}

Semantic roles & 50–950 ramp

primary

#21739F

secondary

#C27E5A

accent

#7A3FE9

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #21739F

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

Preview Lab → · Contrast checker → · Palette generator →