#283C58#283C58

#283C58 is a dark, muted blue. Relative luminance 0.044; OKLCH L 35.3% C 0.055 H 256.9°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX#283C58
RGBrgb(40, 60, 88)
HSLhsl(215, 38%, 25%)
HSVhsv(215, 55%, 35%)
CMYKcmyk(54.5%, 31.8%, 0%, 65.5%)
CIE-LABlab(24.91, 1.15, -19.25)
CIE-LCHlch(24.91, 19.29, 273.41°)
OKLaboklab(35.28% -0.0126 -0.054)
OKLCHoklch(35.28% 0.055 256.9)
XYZxyz(4.2518, 4.3871, 9.8534)
Luminance0.0439 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#283C58 #584428
analogous
#285458 #283C58 #2C2858
triadic
#283C58 #58283C #3C5828
tetradic
#283C58 #582854 #584428 #28582C
square
#283C58 #582854 #584428 #28582C
split-complementary
#283C58 #582C28 #545828
monochromatic
#0A0E15 #151F2E #283C58 #3B5982 #4E75AC

Accessibility & contrast

On white

11.19
#283C58 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.88
#283C58 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C58
11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##283C58#FFFFFF#000000##FFFFFF
##283C581.0011.191.8811.19
#FFFFFF11.191.0021.001.00
#0000001.8821.001.0021.00
##FFFFFF11.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#313E59
Deuteranopia (green-blind)
#2B3957
Tritanopia (blue-blind)
#114246
Achromatopsia (no color)
#3B3B3B

Design tokens & code

CSS
--color: #283c58;
/* rgb */ color: rgb(40, 60, 88);
/* oklch */ color: oklch(35.3% 0.055 256.9);
Tailwind
colors: {
  custom: {
    50: '#657187',
    500: '#283c58',
    950: '#000000',
  },
}
SCSS
$custom: #283c58;
$custom-light: #657187;
$custom-dark: #000000;
JSON
{
  "hex": "#283c58",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 88
  },
  "hsl": {
    "h": 215,
    "s": 37.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35284,
    "c": 0.05546,
    "h": 256.9
  },
  "luminance": 0.04387
}

Semantic roles & 50–950 ramp

primary
#283C58
secondary
#8B7351
accent
#9D5ACD
background
#F6F6F8
surface
#EBECEF
border
#C6C7CA
text
#06070B
muted
#7A7A7C

Preview Lab

Preview with #283C58

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

Preview Lab → · Contrast checker → · Palette generator →

#283C58 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva