#283C67#283C67

#283C67 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.2% C 0.079 H 264.0°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#283C67
RGB	rgb(40, 60, 103)
HSL	hsl(221, 44%, 28%)
HSV	hsv(221, 61%, 40%)
CMYK	cmyk(61.2%, 41.7%, 0%, 59.6%)
CIE-LAB	lab(25.75, 6.62, -27.67)
CIE-LCH	lch(25.75, 28.45, 283.46°)
OKLab	oklab(36.21% -0.0082 -0.0785)
OKLCH	oklch(36.21% 0.079 264)
XYZ	xyz(4.9383, 4.6617, 13.4689)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C67 #675328

analogous

#285B67 #283C67 #332867

triadic

#283C67 #67283C #3C6728

tetradic

#283C67 #67285B #675328 #286733

square

#283C67 #67285B #675328 #286733

split-complementary

#283C67 #673328 #5B6728

monochromatic

#090D16 #17223B #283C67 #395693 #4F71BB

Accessibility & contrast

On white

10.87

#283C67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#283C67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C67

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C67	#FFFFFF	#000000	##FFFFFF
##283C67	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4069

Deuteranopia (green-blind)

#223A66

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283c67;
/* rgb */ color: rgb(40, 60, 103);
/* oklch */ color: oklch(36.2% 0.079 264.0);

Tailwind

colors: {
  custom: {
    50: '#687192',
    500: '#283c67',
    950: '#000000',
  },
}

SCSS

$custom: #283c67;
$custom-light: #687192;
$custom-dark: #000000;

JSON

{
  "hex": "#283c67",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 103
  },
  "hsl": {
    "h": 220.952,
    "s": 44.056,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36208,
    "c": 0.07896,
    "h": 264
  },
  "luminance": 0.04662
}

Semantic roles & 50–950 ramp

primary

#283C67

secondary

#9A8351

accent

#AB54D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283C67

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

Preview Lab → · Contrast checker → · Palette generator →