#283A69#283A69

#283A69 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.9% C 0.085 H 266.4°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#283A69
RGB	rgb(40, 58, 105)
HSL	hsl(223, 45%, 28%)
HSV	hsv(223, 62%, 41%)
CMYK	cmyk(61.9%, 44.8%, 0%, 58.8%)
CIE-LAB	lab(25.25, 8.76, -29.75)
CIE-LCH	lch(25.25, 31.01, 286.40°)
OKLab	oklab(35.86% -0.0053 -0.0846)
OKLCH	oklch(35.86% 0.085 266.4)
XYZ	xyz(4.9371, 4.4967, 13.9697)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A69 #695728

analogous

#285A69 #283A69 #362869

triadic

#283A69 #69283A #3A6928

tetradic

#283A69 #69285A #695728 #286936

square

#283A69 #69285A #695728 #286936

split-complementary

#283A69 #693628 #5A6928

monochromatic

#080C16 #17223D #283A69 #395295 #4F6DBC

Accessibility & contrast

On white

11.06

#283A69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#283A69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A69

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A69	#FFFFFF	#000000	##FFFFFF
##283A69	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253F6B

Deuteranopia (green-blind)

#1D3968

Tritanopia (blue-blind)

#00444C

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283a69;
/* rgb */ color: rgb(40, 58, 105);
/* oklch */ color: oklch(35.9% 0.085 266.4);

Tailwind

colors: {
  custom: {
    50: '#686f94',
    500: '#283a69',
    950: '#000000',
  },
}

SCSS

$custom: #283a69;
$custom-light: #686f94;
$custom-dark: #000000;

JSON

{
  "hex": "#283a69",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 105
  },
  "hsl": {
    "h": 223.385,
    "s": 44.828,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35864,
    "c": 0.08481,
    "h": 266.4
  },
  "luminance": 0.04497
}

Semantic roles & 50–950 ramp

primary

#283A69

secondary

#9C8751

accent

#B153D5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283A69

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

Preview Lab → · Contrast checker → · Palette generator →