#21738C#21738C

#21738C is a mid, moderate cyan. Relative luminance 0.145; OKLCH L 51.9% C 0.085 H 222.8°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#21738C
RGB	rgb(33, 115, 140)
HSL	hsl(194, 62%, 34%)
HSV	hsv(194, 76%, 55%)
CMYK	cmyk(76.4%, 17.9%, 0%, 45.1%)
CIE-LAB	lab(44.91, -15.31, -20.63)
CIE-LCH	lch(44.91, 25.69, 233.41°)
OKLab	oklab(51.88% -0.0624 -0.0577)
OKLCH	oklch(51.88% 0.085 222.8)
XYZ	xyz(11.4896, 14.4769, 26.9946)
Luminance	0.1448 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21738C #8C3A21

analogous

#218C70 #21738C #213E8C

triadic

#21738C #8C2173 #738C21

tetradic

#21738C #70218C #8C3A21 #3E8C21

square

#21738C #70218C #8C3A21 #3E8C21

split-complementary

#21738C #8C213E #8C7021

monochromatic

#0A2229 #154A5A #21738C #2D9CBE #51B7D6

Accessibility & contrast

On white

5.39

#21738C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#21738C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21738C

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21738C	#FFFFFF	#000000	##FFFFFF
##21738C	1.00	5.39	3.90	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#65708D

Deuteranopia (green-blind)

#56668C

Tritanopia (blue-blind)

#007B7B

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #21738c;
/* rgb */ color: rgb(33, 115, 140);
/* oklch */ color: oklch(51.9% 0.085 222.8);

Tailwind

colors: {
  custom: {
    50: '#6d9bad',
    500: '#21738c',
    950: '#000000',
  },
}

SCSS

$custom: #21738c;
$custom-light: #6d9bad;
$custom-dark: #000000;

JSON

{
  "hex": "#21738c",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 140
  },
  "hsl": {
    "h": 194.019,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.51879,
    "c": 0.08499,
    "h": 222.8
  },
  "luminance": 0.14478
}

Semantic roles & 50–950 ramp

primary

#21738C

secondary

#B9684F

accent

#6943E5

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21738C

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

Preview Lab → · Contrast checker → · Palette generator →