#283243#283243

#283243 is a dark, muted blue. Relative luminance 0.031; OKLCH L 31.6% C 0.034 H 260.9°. Best body text is #FFFFFF at 12.90:1 contrast (WCAG AA passes).

Color values

HEX	#283243
RGB	rgb(40, 50, 67)
HSL	hsl(218, 25%, 21%)
HSV	hsv(218, 40%, 26%)
CMYK	cmyk(40.3%, 25.4%, 0%, 73.7%)
CIE-LAB	lab(20.59, 0.82, -11.98)
CIE-LCH	lch(20.59, 12.01, 273.89°)
OKLab	oklab(31.56% -0.0053 -0.0331)
OKLCH	oklch(31.56% 0.034 260.9)
XYZ	xyz(3.0285, 3.1374, 5.7551)
Luminance	0.0314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283243 #433928

analogous

#283F43 #283243 #2B2843

triadic

#283243 #432832 #324328

tetradic

#283243 #43283F #433928 #28432B

square

#283243 #43283F #433928 #28432B

split-complementary

#283243 #432B28 #3F4328

monochromatic

#0B0E13 #11151D #283243 #3F4F69 #566B90

Accessibility & contrast

On white

12.90

#283243 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#283243 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283243

12.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283243	#FFFFFF	#000000	##FFFFFF
##283243	1.00	12.90	1.63	12.90
#FFFFFF	12.90	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3344

Deuteranopia (green-blind)

#293043

Tritanopia (blue-blind)

#203638

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #283243;
/* rgb */ color: rgb(40, 50, 67);
/* oklch */ color: oklch(31.6% 0.034 260.9);

Tailwind

colors: {
  custom: {
    50: '#636977',
    500: '#283243',
    950: '#000000',
  },
}

SCSS

$custom: #283243;
$custom-light: #636977;
$custom-dark: #000000;

JSON

{
  "hex": "#283243",
  "rgb": {
    "r": 40,
    "g": 50,
    "b": 67
  },
  "hsl": {
    "h": 217.778,
    "s": 25.234,
    "l": 20.98
  },
  "oklch": {
    "l": 0.31558,
    "c": 0.03357,
    "h": 260.9
  },
  "luminance": 0.03138
}

Semantic roles & 50–950 ramp

primary

#283243

secondary

#756852

accent

#A066C2

background

#F5F6F7

surface

#EAEBED

border

#C6C6C8

text

#050608

muted

#797A7B

Preview Lab

Preview with #283243

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

Preview Lab → · Contrast checker → · Palette generator →