#283A67#283A67

#283A67 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.7% C 0.082 H 266.0°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#283A67
RGB	rgb(40, 58, 103)
HSL	hsl(223, 44%, 28%)
HSV	hsv(223, 61%, 40%)
CMYK	cmyk(61.2%, 43.7%, 0%, 59.6%)
CIE-LAB	lab(25.13, 8.01, -28.66)
CIE-LCH	lch(25.13, 29.76, 285.60°)
OKLab	oklab(35.73% -0.0057 -0.0814)
OKLCH	oklch(35.73% 0.082 266)
XYZ	xyz(4.8355, 4.4561, 13.4346)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A67 #675528

analogous

#285967 #283A67 #352867

triadic

#283A67 #67283A #3A6728

tetradic

#283A67 #672859 #675528 #286735

square

#283A67 #672859 #675528 #286735

split-complementary

#283A67 #673528 #596728

monochromatic

#090C16 #17213B #283A67 #395393 #4F6EBB

Accessibility & contrast

On white

11.10

#283A67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#283A67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A67

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A67	#FFFFFF	#000000	##FFFFFF
##283A67	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273F69

Deuteranopia (green-blind)

#1E3966

Tritanopia (blue-blind)

#00444B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283a67;
/* rgb */ color: rgb(40, 58, 103);
/* oklch */ color: oklch(35.7% 0.082 266.0);

Tailwind

colors: {
  custom: {
    50: '#686f92',
    500: '#283a67',
    950: '#000000',
  },
}

SCSS

$custom: #283a67;
$custom-light: #686f92;
$custom-dark: #000000;

JSON

{
  "hex": "#283a67",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 103
  },
  "hsl": {
    "h": 222.857,
    "s": 44.056,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35728,
    "c": 0.08165,
    "h": 266
  },
  "luminance": 0.04457
}

Semantic roles & 50–950 ramp

primary

#283A67

secondary

#9A8551

accent

#AF54D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283A67

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

Preview Lab → · Contrast checker → · Palette generator →