#21456B#21456B

#21456B is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.3% C 0.077 H 251.6°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#21456B
RGB	rgb(33, 69, 107)
HSL	hsl(211, 53%, 27%)
HSV	hsv(211, 69%, 42%)
CMYK	cmyk(69.2%, 35.5%, 0%, 58%)
CIE-LAB	lab(28.49, 0.56, -25.92)
CIE-LCH	lch(28.49, 25.93, 271.23°)
OKLab	oklab(38.32% -0.0244 -0.0734)
OKLCH	oklch(38.32% 0.077 251.6)
XYZ	xyz(5.4082, 5.6406, 14.7108)
Luminance	0.0564 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21456B #6B4721

analogous

#216A6B #21456B #22216B

triadic

#21456B #6B2145 #456B21

tetradic

#21456B #6B216A #6B4721 #216B22

square

#21456B #6B216A #6B4721 #216B22

split-complementary

#21456B #6B2221 #6A6B21

monochromatic

#070F17 #13273C #21456B #2F639A #4281C5

Accessibility & contrast

On white

9.87

#21456B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#21456B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21456B

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21456B	#FFFFFF	#000000	##FFFFFF
##21456B	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34476D

Deuteranopia (green-blind)

#2A406A

Tritanopia (blue-blind)

#004E53

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #21456b;
/* rgb */ color: rgb(33, 69, 107);
/* oklch */ color: oklch(38.3% 0.077 251.6);

Tailwind

colors: {
  custom: {
    50: '#657895',
    500: '#21456b',
    950: '#000000',
  },
}

SCSS

$custom: #21456b;
$custom-light: #657895;
$custom-dark: #000000;

JSON

{
  "hex": "#21456b",
  "rgb": {
    "r": 33,
    "g": 69,
    "b": 107
  },
  "hsl": {
    "h": 210.811,
    "s": 52.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.38318,
    "c": 0.07738,
    "h": 251.6
  },
  "luminance": 0.05641
}

Semantic roles & 50–950 ramp

primary

#21456B

secondary

#9F7549

accent

#964CDC

background

#F6F7F9

surface

#EBEDF1

border

#C6C8CB

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #21456B

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

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