#283D69#283D69

#283D69 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.6% C 0.081 H 263.6°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#283D69
RGB	rgb(40, 61, 105)
HSL	hsl(221, 45%, 28%)
HSV	hsv(221, 62%, 41%)
CMYK	cmyk(61.9%, 41.9%, 0%, 58.8%)
CIE-LAB	lab(26.18, 6.68, -28.27)
CIE-LCH	lch(26.18, 29.05, 283.30°)
OKLab	oklab(36.58% -0.009 -0.0803)
OKLCH	oklch(36.58% 0.081 263.6)
XYZ	xyz(5.0927, 4.8081, 14.0215)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D69 #695428

analogous

#285D69 #283D69 #332869

triadic

#283D69 #69283D #3D6928

tetradic

#283D69 #69285D #695428 #286933

square

#283D69 #69285D #695428 #286933

split-complementary

#283D69 #693328 #5D6928

monochromatic

#080D16 #17233D #283D69 #395795 #4F72BC

Accessibility & contrast

On white

10.70

#283D69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#283D69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D69

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D69	#FFFFFF	#000000	##FFFFFF
##283D69	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A416B

Deuteranopia (green-blind)

#223B68

Tritanopia (blue-blind)

#00474E

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283d69;
/* rgb */ color: rgb(40, 61, 105);
/* oklch */ color: oklch(36.6% 0.081 263.6);

Tailwind

colors: {
  custom: {
    50: '#687294',
    500: '#283d69',
    950: '#000000',
  },
}

SCSS

$custom: #283d69;
$custom-light: #687294;
$custom-dark: #000000;

JSON

{
  "hex": "#283d69",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 105
  },
  "hsl": {
    "h": 220.615,
    "s": 44.828,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36582,
    "c": 0.08077,
    "h": 263.6
  },
  "luminance": 0.04809
}

Semantic roles & 50–950 ramp

primary

#283D69

secondary

#9C8451

accent

#AB53D5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283D69

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

Preview Lab → · Contrast checker → · Palette generator →