#21404B#21404B

#21404B is a dark, muted cyan. Relative luminance 0.045; OKLCH L 35.2% C 0.041 H 223.1°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#21404B
RGB	rgb(33, 64, 75)
HSL	hsl(196, 39%, 21%)
HSV	hsv(196, 56%, 29%)
CMYK	cmyk(56%, 14.7%, 0%, 70.6%)
CIE-LAB	lab(25.25, -7.90, -10.22)
CIE-LCH	lch(25.25, 12.92, 232.30°)
OKLab	oklab(35.25% -0.0302 -0.0283)
OKLCH	oklch(35.25% 0.041 223.1)
XYZ	xyz(3.7301, 4.4978, 7.3268)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21404B #4B2C21

analogous

#214B41 #21404B #212B4B

triadic

#21404B #4B2140 #404B21

tetradic

#21404B #41214B #4B2C21 #2B4B21

square

#21404B #41214B #4B2C21 #2B4B21

split-complementary

#21404B #4B212B #4B4121

monochromatic

#091215 #0E1C20 #21404B #346475 #4689A0

Accessibility & contrast

On white

11.05

#21404B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#21404B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21404B

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21404B	#FFFFFF	#000000	##FFFFFF
##21404B	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3F4C

Deuteranopia (green-blind)

#333A4B

Tritanopia (blue-blind)

#094343

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #21404b;
/* rgb */ color: rgb(33, 64, 75);
/* oklch */ color: oklch(35.2% 0.041 223.1);

Tailwind

colors: {
  custom: {
    50: '#60747d',
    500: '#21404b',
    950: '#000000',
  },
}

SCSS

$custom: #21404b;
$custom-light: #60747d;
$custom-dark: #000000;

JSON

{
  "hex": "#21404b",
  "rgb": {
    "r": 33,
    "g": 64,
    "b": 75
  },
  "hsl": {
    "h": 195.714,
    "s": 38.889,
    "l": 21.176
  },
  "oklch": {
    "l": 0.35247,
    "c": 0.04142,
    "h": 223.1
  },
  "luminance": 0.04498
}

Semantic roles & 50–950 ramp

primary

#21404B

secondary

#7F5749

accent

#7859CF

background

#F5F7F7

surface

#EAEDEE

border

#C6C8C9

text

#050809

muted

#797B7B

Preview Lab

Preview with #21404B

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

Preview Lab → · Contrast checker → · Palette generator →