#283D58#283D58

#283D58 is a dark, muted cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.054 H 255.1°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#283D58
RGB	rgb(40, 61, 88)
HSL	hsl(214, 38%, 25%)
HSV	hsv(214, 55%, 35%)
CMYK	cmyk(54.5%, 30.7%, 0%, 65.5%)
CIE-LAB	lab(25.24, 0.48, -18.75)
CIE-LCH	lch(25.24, 18.75, 271.45°)
OKLab	oklab(35.54% -0.0139 -0.0525)
OKLCH	oklch(35.54% 0.054 255.1)
XYZ	xyz(4.3047, 4.4929, 9.8710)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D58 #584328

analogous

#285558 #283D58 #2B2858

triadic

#283D58 #58283D #3D5828

tetradic

#283D58 #582855 #584328 #28582B

square

#283D58 #582855 #584328 #28582B

split-complementary

#283D58 #582B28 #555828

monochromatic

#0A0F15 #15202E #283D58 #3B5A82 #4E77AC

Accessibility & contrast

On white

11.06

#283D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#283D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D58

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D58	#FFFFFF	#000000	##FFFFFF
##283D58	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323E59

Deuteranopia (green-blind)

#2C3A57

Tritanopia (blue-blind)

#114346

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283d58;
/* rgb */ color: rgb(40, 61, 88);
/* oklch */ color: oklch(35.5% 0.054 255.1);

Tailwind

colors: {
  custom: {
    50: '#657287',
    500: '#283d58',
    950: '#000000',
  },
}

SCSS

$custom: #283d58;
$custom-light: #657287;
$custom-dark: #000000;

JSON

{
  "hex": "#283d58",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 88
  },
  "hsl": {
    "h": 213.75,
    "s": 37.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35539,
    "c": 0.05437,
    "h": 255.1
  },
  "luminance": 0.04493
}

Semantic roles & 50–950 ramp

primary

#283D58

secondary

#8B7251

accent

#9B5ACD

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#06070B

muted

#7A7A7C

Preview Lab

Preview with #283D58

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

Preview Lab → · Contrast checker → · Palette generator →