#283C65#283C65

#283C65 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.1% C 0.076 H 263.4°. Best body text is #FFFFFF at 10.91:1 contrast (WCAG AA passes).

Color values

HEX	#283C65
RGB	rgb(40, 60, 101)
HSL	hsl(220, 43%, 28%)
HSV	hsv(220, 60%, 40%)
CMYK	cmyk(60.4%, 40.6%, 0%, 60.4%)
CIE-LAB	lab(25.63, 5.88, -26.57)
CIE-LCH	lch(25.63, 27.21, 282.47°)
OKLab	oklab(36.08% -0.0087 -0.0753)
OKLCH	oklch(36.08% 0.076 263.4)
XYZ	xyz(4.8391, 4.6220, 12.9465)
Luminance	0.0462 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C65 #655128

analogous

#285A65 #283C65 #332865

triadic

#283C65 #65283C #3C6528

tetradic

#283C65 #65285A #655128 #286533

square

#283C65 #65285A #655128 #286533

split-complementary

#283C65 #653328 #5A6528

monochromatic

#090D16 #172239 #283C65 #395691 #4E71B9

Accessibility & contrast

On white

10.91

#283C65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#283C65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C65

10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C65	#FFFFFF	#000000	##FFFFFF
##283C65	1.00	10.91	1.92	10.91
#FFFFFF	10.91	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4067

Deuteranopia (green-blind)

#233A64

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283c65;
/* rgb */ color: rgb(40, 60, 101);
/* oklch */ color: oklch(36.1% 0.076 263.4);

Tailwind

colors: {
  custom: {
    50: '#677191',
    500: '#283c65',
    950: '#000000',
  },
}

SCSS

$custom: #283c65;
$custom-light: #677191;
$custom-dark: #000000;

JSON

{
  "hex": "#283c65",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 101
  },
  "hsl": {
    "h": 220.328,
    "s": 43.262,
    "l": 27.647
  },
  "oklch": {
    "l": 0.36078,
    "c": 0.07581,
    "h": 263.4
  },
  "luminance": 0.04622
}

Semantic roles & 50–950 ramp

primary

#283C65

secondary

#988151

accent

#AA55D3

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #283C65

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

Preview Lab → · Contrast checker → · Palette generator →