#283B69#283B69

#283B69 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.1% C 0.083 H 265.5°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#283B69
RGB	rgb(40, 59, 105)
HSL	hsl(222, 45%, 28%)
HSV	hsv(222, 62%, 41%)
CMYK	cmyk(61.9%, 43.8%, 0%, 58.8%)
CIE-LAB	lab(25.56, 8.06, -29.26)
CIE-LCH	lch(25.56, 30.35, 285.41°)
OKLab	oklab(36.1% -0.0065 -0.0832)
OKLCH	oklch(36.1% 0.083 265.5)
XYZ	xyz(4.9880, 4.5986, 13.9866)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B69 #695628

analogous

#285B69 #283B69 #352869

triadic

#283B69 #69283B #3B6928

tetradic

#283B69 #69285B #695628 #286935

square

#283B69 #69285B #695628 #286935

split-complementary

#283B69 #693528 #5B6928

monochromatic

#080C16 #17223D #283B69 #395495 #4F6FBC

Accessibility & contrast

On white

10.94

#283B69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#283B69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B69

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B69	#FFFFFF	#000000	##FFFFFF
##283B69	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27406B

Deuteranopia (green-blind)

#1E3A68

Tritanopia (blue-blind)

#00454D

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283b69;
/* rgb */ color: rgb(40, 59, 105);
/* oklch */ color: oklch(36.1% 0.083 265.5);

Tailwind

colors: {
  custom: {
    50: '#687094',
    500: '#283b69',
    950: '#000000',
  },
}

SCSS

$custom: #283b69;
$custom-light: #687094;
$custom-dark: #000000;

JSON

{
  "hex": "#283b69",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 105
  },
  "hsl": {
    "h": 222.462,
    "s": 44.828,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36102,
    "c": 0.08345,
    "h": 265.5
  },
  "luminance": 0.04599
}

Semantic roles & 50–950 ramp

primary

#283B69

secondary

#9C8651

accent

#AF53D5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283B69

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

Preview Lab → · Contrast checker → · Palette generator →