#21758F#21758F

#21758F is a mid, moderate cyan. Relative luminance 0.150; OKLCH L 52.5% C 0.087 H 223.2°. Best body text is #FFFFFF at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#21758F
RGB	rgb(33, 117, 143)
HSL	hsl(194, 63%, 35%)
HSV	hsv(194, 77%, 56%)
CMYK	cmyk(76.9%, 18.2%, 0%, 43.9%)
CIE-LAB	lab(45.67, -15.38, -21.23)
CIE-LCH	lch(45.67, 26.22, 234.08°)
OKLab	oklab(52.53% -0.0632 -0.0595)
OKLCH	oklch(52.53% 0.087 223.2)
XYZ	xyz(11.9444, 15.0277, 28.2524)
Luminance	0.1503 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21758F #8F3B21

analogous

#218F72 #21758F #213E8F

triadic

#21758F #8F2175 #758F21

tetradic

#21758F #72218F #8F3B21 #3E8F21

square

#21758F #72218F #8F3B21 #3E8F21

split-complementary

#21758F #8F213E #8F7221

monochromatic

#0A242C #164C5D #21758F #2C9EC1 #53B8D7

Accessibility & contrast

On white

5.24

#21758F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#21758F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21758F

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21758F	#FFFFFF	#000000	##FFFFFF
##21758F	1.00	5.24	4.01	5.24
#FFFFFF	5.24	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667290

Deuteranopia (green-blind)

#57678F

Tritanopia (blue-blind)

#007D7D

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #21758f;
/* rgb */ color: rgb(33, 117, 143);
/* oklch */ color: oklch(52.5% 0.087 223.2);

Tailwind

colors: {
  custom: {
    50: '#6e9cb0',
    500: '#21758f',
    950: '#000000',
  },
}

SCSS

$custom: #21758f;
$custom-light: #6e9cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#21758f",
  "rgb": {
    "r": 33,
    "g": 117,
    "b": 143
  },
  "hsl": {
    "h": 194.182,
    "s": 62.5,
    "l": 34.51
  },
  "oklch": {
    "l": 0.52532,
    "c": 0.0868,
    "h": 223.2
  },
  "luminance": 0.15029
}

Semantic roles & 50–950 ramp

primary

#21758F

secondary

#BB6A51

accent

#6942E6

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #21758F

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

Preview Lab → · Contrast checker → · Palette generator →