#283D67#283D67

#283D67 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.5% C 0.078 H 263.0°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#283D67
RGB	rgb(40, 61, 103)
HSL	hsl(220, 44%, 28%)
HSV	hsv(220, 61%, 40%)
CMYK	cmyk(61.2%, 40.8%, 0%, 59.6%)
CIE-LAB	lab(26.06, 5.94, -27.18)
CIE-LCH	lch(26.06, 27.82, 282.32°)
OKLab	oklab(36.45% -0.0095 -0.0771)
OKLCH	oklch(36.45% 0.078 263)
XYZ	xyz(4.9912, 4.7675, 13.4865)
Luminance	0.0477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D67 #675228

analogous

#285C67 #283D67 #322867

triadic

#283D67 #67283D #3D6728

tetradic

#283D67 #67285C #675228 #286732

square

#283D67 #67285C #675228 #286732

split-complementary

#283D67 #673228 #5C6728

monochromatic

#090D16 #17233B #283D67 #395793 #4F73BB

Accessibility & contrast

On white

10.75

#283D67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#283D67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D67

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D67	#FFFFFF	#000000	##FFFFFF
##283D67	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4169

Deuteranopia (green-blind)

#233B66

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283d67;
/* rgb */ color: rgb(40, 61, 103);
/* oklch */ color: oklch(36.5% 0.078 263.0);

Tailwind

colors: {
  custom: {
    50: '#687292',
    500: '#283d67',
    950: '#000000',
  },
}

SCSS

$custom: #283d67;
$custom-light: #687292;
$custom-dark: #000000;

JSON

{
  "hex": "#283d67",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 103
  },
  "hsl": {
    "h": 220,
    "s": 44.056,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36451,
    "c": 0.07764,
    "h": 263
  },
  "luminance": 0.04768
}

Semantic roles & 50–950 ramp

primary

#283D67

secondary

#9A8151

accent

#A954D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283D67

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

Preview Lab → · Contrast checker → · Palette generator →