#21406B#21406B

#21406B is a dark, moderate cyan. Relative luminance 0.051; OKLCH L 37.1% C 0.083 H 257.0°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#21406B
RGB	rgb(33, 64, 107)
HSL	hsl(215, 53%, 27%)
HSV	hsv(215, 69%, 42%)
CMYK	cmyk(69.2%, 40.2%, 0%, 58%)
CIE-LAB	lab(26.88, 3.93, -28.47)
CIE-LCH	lch(26.88, 28.73, 277.85°)
OKLab	oklab(37.06% -0.0187 -0.0809)
OKLCH	oklch(37.06% 0.083 257)
XYZ	xyz(5.1135, 5.0512, 14.6126)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21406B #6B4C21

analogous

#21656B #21406B #27216B

triadic

#21406B #6B2140 #406B21

tetradic

#21406B #6B2165 #6B4C21 #216B27

square

#21406B #6B2165 #6B4C21 #216B27

split-complementary

#21406B #6B2721 #656B21

monochromatic

#070E17 #13243C #21406B #2F5C9A #4279C5

Accessibility & contrast

On white

10.45

#21406B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#21406B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21406B

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21406B	#FFFFFF	#000000	##FFFFFF
##21406B	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D436D

Deuteranopia (green-blind)

#223C6A

Tritanopia (blue-blind)

#004A50

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #21406b;
/* rgb */ color: rgb(33, 64, 107);
/* oklch */ color: oklch(37.1% 0.083 257.0);

Tailwind

colors: {
  custom: {
    50: '#657495',
    500: '#21406b',
    950: '#000000',
  },
}

SCSS

$custom: #21406b;
$custom-light: #657495;
$custom-dark: #000000;

JSON

{
  "hex": "#21406b",
  "rgb": {
    "r": 33,
    "g": 64,
    "b": 107
  },
  "hsl": {
    "h": 214.865,
    "s": 52.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.37063,
    "c": 0.08306,
    "h": 257
  },
  "luminance": 0.05052
}

Semantic roles & 50–950 ramp

primary

#21406B

secondary

#9F7B49

accent

#A04CDC

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #21406B

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

Preview Lab → · Contrast checker → · Palette generator →