#283C4E#283C4E

#283C4E is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.041 H 246.4°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#283C4E
RGB	rgb(40, 60, 78)
HSL	hsl(208, 32%, 23%)
HSV	hsv(208, 49%, 31%)
CMYK	cmyk(48.7%, 23.1%, 0%, 69.4%)
CIE-LAB	lab(24.43, -2.30, -13.43)
CIE-LCH	lch(24.43, 13.63, 260.27°)
OKLab	oklab(34.74% -0.0163 -0.0373)
OKLCH	oklch(34.74% 0.041 246.4)
XYZ	xyz(3.8656, 4.2326, 7.8195)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C4E #4E3A28

analogous

#284E4D #283C4E #28294E

triadic

#283C4E #4E283C #3C4E28

tetradic

#283C4E #4D284E #4E3A28 #294E28

square

#283C4E #4D284E #4E3A28 #294E28

split-complementary

#283C4E #4E2829 #4E4D28

monochromatic

#0A1014 #131D26 #283C4E #3D5B76 #517A9F

Accessibility & contrast

On white

11.37

#283C4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#283C4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C4E

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C4E	#FFFFFF	#000000	##FFFFFF
##283C4E	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353C4F

Deuteranopia (green-blind)

#30384E

Tritanopia (blue-blind)

#194042

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283c4e;
/* rgb */ color: rgb(40, 60, 78);
/* oklch */ color: oklch(34.7% 0.041 246.4);

Tailwind

colors: {
  custom: {
    50: '#64717f',
    500: '#283c4e',
    950: '#000000',
  },
}

SCSS

$custom: #283c4e;
$custom-light: #64717f;
$custom-dark: #000000;

JSON

{
  "hex": "#283c4e",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 78
  },
  "hsl": {
    "h": 208.421,
    "s": 32.203,
    "l": 23.137
  },
  "oklch": {
    "l": 0.34742,
    "c": 0.0407,
    "h": 246.4
  },
  "luminance": 0.04233
}

Semantic roles & 50–950 ramp

primary

#283C4E

secondary

#816851

accent

#915FC8

background

#F6F6F7

surface

#EBECEE

border

#C6C7C9

text

#05070A

muted

#7A7A7C

Preview Lab

Preview with #283C4E

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

Preview Lab → · Contrast checker → · Palette generator →