#283D53#283D53

#283D53 is a dark, muted cyan. Relative luminance 0.044; OKLCH L 35.3% C 0.047 H 250.4°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#283D53
RGB	rgb(40, 61, 83)
HSL	hsl(211, 35%, 24%)
HSV	hsv(211, 52%, 33%)
CMYK	cmyk(51.8%, 26.5%, 0%, 67.5%)
CIE-LAB	lab(24.99, -1.27, -15.85)
CIE-LCH	lch(24.99, 15.90, 265.42°)
OKLab	oklab(35.27% -0.0158 -0.0442)
OKLCH	oklch(35.27% 0.047 250.4)
XYZ	xyz(4.1046, 4.4129, 8.8174)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D53 #533E28

analogous

#285353 #283D53 #292853

triadic

#283D53 #53283D #3D5328

tetradic

#283D53 #532853 #533E28 #285329

square

#283D53 #532853 #533E28 #285329

split-complementary

#283D53 #532928 #535328

monochromatic

#0A0F15 #141F2A #283D53 #3C5B7C #507AA6

Accessibility & contrast

On white

11.15

#283D53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#283D53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D53

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D53	#FFFFFF	#000000	##FFFFFF
##283D53	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343E54

Deuteranopia (green-blind)

#2F3953

Tritanopia (blue-blind)

#154244

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283d53;
/* rgb */ color: rgb(40, 61, 83);
/* oklch */ color: oklch(35.3% 0.047 250.4);

Tailwind

colors: {
  custom: {
    50: '#657283',
    500: '#283d53',
    950: '#000000',
  },
}

SCSS

$custom: #283d53;
$custom-light: #657283;
$custom-dark: #000000;

JSON

{
  "hex": "#283d53",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 83
  },
  "hsl": {
    "h": 210.698,
    "s": 34.959,
    "l": 24.118
  },
  "oklch": {
    "l": 0.35265,
    "c": 0.04694,
    "h": 250.4
  },
  "luminance": 0.04413
}

Semantic roles & 50–950 ramp

primary

#283D53

secondary

#866C51

accent

#955DCB

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#06070A

muted

#7A7A7C

Preview Lab

Preview with #283D53

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

Preview Lab → · Contrast checker → · Palette generator →