#283B53#283B53

#283B53 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.049 H 254.7°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#283B53
RGB	rgb(40, 59, 83)
HSL	hsl(213, 35%, 24%)
HSV	hsv(213, 52%, 33%)
CMYK	cmyk(51.8%, 28.9%, 0%, 67.5%)
CIE-LAB	lab(24.33, 0.07, -16.88)
CIE-LCH	lch(24.33, 16.88, 270.23°)
OKLab	oklab(34.75% -0.0129 -0.0472)
OKLCH	oklch(34.75% 0.049 254.7)
XYZ	xyz(3.9998, 4.2033, 8.7825)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B53 #534028

analogous

#285153 #283B53 #2B2853

triadic

#283B53 #53283B #3B5328

tetradic

#283B53 #532851 #534028 #28532B

square

#283B53 #532851 #534028 #28532B

split-complementary

#283B53 #532B28 #515328

monochromatic

#0A0F15 #141E2A #283B53 #3C587C #5076A6

Accessibility & contrast

On white

11.41

#283B53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#283B53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B53

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B53	#FFFFFF	#000000	##FFFFFF
##283B53	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323C54

Deuteranopia (green-blind)

#2D3853

Tritanopia (blue-blind)

#164043

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283b53;
/* rgb */ color: rgb(40, 59, 83);
/* oklch */ color: oklch(34.7% 0.049 254.7);

Tailwind

colors: {
  custom: {
    50: '#657083',
    500: '#283b53',
    950: '#000000',
  },
}

SCSS

$custom: #283b53;
$custom-light: #657083;
$custom-dark: #000000;

JSON

{
  "hex": "#283b53",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 83
  },
  "hsl": {
    "h": 213.488,
    "s": 34.959,
    "l": 24.118
  },
  "oklch": {
    "l": 0.34747,
    "c": 0.04889,
    "h": 254.7
  },
  "luminance": 0.04204
}

Semantic roles & 50–950 ramp

primary

#283B53

secondary

#866E51

accent

#9A5DCB

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#06070A

muted

#7A7A7C

Preview Lab

Preview with #283B53

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

Preview Lab → · Contrast checker → · Palette generator →