#21748B#21748B

#21748B is a mid, moderate cyan. Relative luminance 0.147; OKLCH L 52.1% C 0.084 H 220.7°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#21748B
RGB	rgb(33, 116, 139)
HSL	hsl(193, 62%, 34%)
HSV	hsv(193, 76%, 55%)
CMYK	cmyk(76.3%, 16.5%, 0%, 45.5%)
CIE-LAB	lab(45.19, -16.22, -19.60)
CIE-LCH	lch(45.19, 25.44, 230.39°)
OKLab	oklab(52.09% -0.0638 -0.0548)
OKLCH	oklch(52.09% 0.084 220.7)
XYZ	xyz(11.5308, 14.6768, 26.6463)
Luminance	0.1468 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21748B #8B3821

analogous

#218B6D #21748B #213F8B

triadic

#21748B #8B2174 #748B21

tetradic

#21748B #6D218B #8B3821 #3F8B21

square

#21748B #6D218B #8B3821 #3F8B21

split-complementary

#21748B #8B213F #8B6D21

monochromatic

#0A2128 #154B5A #21748B #2D9DBC #51B9D6

Accessibility & contrast

On white

5.34

#21748B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#21748B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21748B

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21748B	#FFFFFF	#000000	##FFFFFF
##21748B	1.00	5.34	3.94	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#66718C

Deuteranopia (green-blind)

#58668B

Tritanopia (blue-blind)

#007B7B

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #21748b;
/* rgb */ color: rgb(33, 116, 139);
/* oklch */ color: oklch(52.1% 0.084 220.7);

Tailwind

colors: {
  custom: {
    50: '#6d9cad',
    500: '#21748b',
    950: '#000000',
  },
}

SCSS

$custom: #21748b;
$custom-light: #6d9cad;
$custom-dark: #000000;

JSON

{
  "hex": "#21748b",
  "rgb": {
    "r": 33,
    "g": 116,
    "b": 139
  },
  "hsl": {
    "h": 193.019,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.5209,
    "c": 0.08413,
    "h": 220.7
  },
  "luminance": 0.14678
}

Semantic roles & 50–950 ramp

primary

#21748B

secondary

#B9664F

accent

#6643E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21748B

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

Preview Lab → · Contrast checker → · Palette generator →