#283440#283440

#283440 is a dark, muted cyan. Relative luminance 0.033; OKLCH L 31.9% C 0.027 H 248.7°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#283440
RGB	rgb(40, 52, 64)
HSL	hsl(210, 23%, 20%)
HSV	hsv(210, 38%, 25%)
CMYK	cmyk(37.5%, 18.8%, 0%, 74.9%)
CIE-LAB	lab(21.12, -1.50, -9.13)
CIE-LCH	lch(21.12, 9.25, 260.69°)
OKLab	oklab(31.93% -0.0098 -0.0251)
OKLCH	oklch(31.93% 0.027 248.7)
XYZ	xyz(3.0282, 3.2771, 5.3225)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283440 #403428

analogous

#284040 #283440 #282840

triadic

#283440 #402834 #344028

tetradic

#283440 #402840 #403428 #284028

square

#283440 #402840 #403428 #284028

split-complementary

#283440 #402828 #404028

monochromatic

#0C0F13 #10151A #283440 #405366 #57718B

Accessibility & contrast

On white

12.69

#283440 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#283440 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283440

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283440	#FFFFFF	#000000	##FFFFFF
##283440	1.00	12.69	1.66	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3441

Deuteranopia (green-blind)

#2C3240

Tritanopia (blue-blind)

#213738

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #283440;
/* rgb */ color: rgb(40, 52, 64);
/* oklch */ color: oklch(31.9% 0.027 248.7);

Tailwind

colors: {
  custom: {
    50: '#626b74',
    500: '#283440',
    950: '#000000',
  },
}

SCSS

$custom: #283440;
$custom-light: #626b74;
$custom-dark: #000000;

JSON

{
  "hex": "#283440",
  "rgb": {
    "r": 40,
    "g": 52,
    "b": 64
  },
  "hsl": {
    "h": 210,
    "s": 23.077,
    "l": 20.392
  },
  "oklch": {
    "l": 0.31934,
    "c": 0.02694,
    "h": 248.7
  },
  "luminance": 0.03277
}

Semantic roles & 50–950 ramp

primary

#283440

secondary

#726252

accent

#9468C0

background

#F5F6F7

surface

#EAEBED

border

#C6C6C8

text

#050608

muted

#797A7B

Preview Lab

Preview with #283440

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

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