#283F50#283F50

#283F50 is a dark, muted cyan. Relative luminance 0.046; OKLCH L 35.6% C 0.041 H 241.4°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#283F50
RGB	rgb(40, 63, 80)
HSL	hsl(206, 33%, 24%)
HSV	hsv(206, 50%, 31%)
CMYK	cmyk(50%, 21.2%, 0%, 68.6%)
CIE-LAB	lab(25.52, -3.60, -13.07)
CIE-LCH	lch(25.52, 13.56, 254.59°)
OKLab	oklab(35.63% -0.0198 -0.0363)
OKLCH	oklch(35.63% 0.041 241.4)
XYZ	xyz(4.1000, 4.5850, 8.2568)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F50 #503928

analogous

#28504D #283F50 #282B50

triadic

#283F50 #50283F #3F5028

tetradic

#283F50 #4D2850 #503928 #2B5028

square

#283F50 #4D2850 #503928 #2B5028

split-complementary

#283F50 #50282B #504D28

monochromatic

#0A1014 #141F27 #283F50 #3C5F79 #517FA2

Accessibility & contrast

On white

10.95

#283F50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#283F50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F50

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F50	#FFFFFF	#000000	##FFFFFF
##283F50	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383F51

Deuteranopia (green-blind)

#323B50

Tritanopia (blue-blind)

#174345

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283f50;
/* rgb */ color: rgb(40, 63, 80);
/* oklch */ color: oklch(35.6% 0.041 241.4);

Tailwind

colors: {
  custom: {
    50: '#647481',
    500: '#283f50',
    950: '#000000',
  },
}

SCSS

$custom: #283f50;
$custom-light: #647481;
$custom-dark: #000000;

JSON

{
  "hex": "#283f50",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 80
  },
  "hsl": {
    "h": 205.5,
    "s": 33.333,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35634,
    "c": 0.04134,
    "h": 241.4
  },
  "luminance": 0.04585
}

Semantic roles & 50–950 ramp

primary

#283F50

secondary

#836651

accent

#8C5EC9

background

#F6F7F7

surface

#EBEDEE

border

#C6C8C9

text

#05080A

muted

#7A7B7C

Preview Lab

Preview with #283F50

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

Preview Lab → · Contrast checker → · Palette generator →