#283D68#283D68

#283D68 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.5% C 0.079 H 263.3°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#283D68
RGB	rgb(40, 61, 104)
HSL	hsl(220, 44%, 28%)
HSV	hsv(220, 62%, 41%)
CMYK	cmyk(61.5%, 41.3%, 0%, 59.2%)
CIE-LAB	lab(26.12, 6.31, -27.72)
CIE-LCH	lch(26.12, 28.43, 282.82°)
OKLab	oklab(36.52% -0.0092 -0.0787)
OKLCH	oklch(36.52% 0.079 263.3)
XYZ	xyz(5.0416, 4.7877, 13.7524)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D68 #685328

analogous

#285D68 #283D68 #332868

triadic

#283D68 #68283D #3D6828

tetradic

#283D68 #68285D #685328 #286833

square

#283D68 #68285D #685328 #286833

split-complementary

#283D68 #683328 #5D6828

monochromatic

#090D16 #17233C #283D68 #395794 #4F73BB

Accessibility & contrast

On white

10.73

#283D68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#283D68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D68

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D68	#FFFFFF	#000000	##FFFFFF
##283D68	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B416A

Deuteranopia (green-blind)

#223B67

Tritanopia (blue-blind)

#00474D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283d68;
/* rgb */ color: rgb(40, 61, 104);
/* oklch */ color: oklch(36.5% 0.079 263.3);

Tailwind

colors: {
  custom: {
    50: '#687293',
    500: '#283d68',
    950: '#000000',
  },
}

SCSS

$custom: #283d68;
$custom-light: #687293;
$custom-dark: #000000;

JSON

{
  "hex": "#283d68",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 104
  },
  "hsl": {
    "h": 220.313,
    "s": 44.444,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36516,
    "c": 0.07921,
    "h": 263.3
  },
  "luminance": 0.04788
}

Semantic roles & 50–950 ramp

primary

#283D68

secondary

#9B8351

accent

#AA54D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283D68

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

Preview Lab → · Contrast checker → · Palette generator →