#283680#283680

#283680 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.126 H 270.8°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX#283680
RGBrgb(40, 54, 128)
HSLhsl(230, 52%, 33%)
HSVhsv(230, 69%, 50%)
CMYKcmyk(68.8%, 57.8%, 0%, 49.8%)
CIE-LABlab(25.71, 20.30, -43.64)
CIE-LCHlch(25.71, 48.13, 294.95°)
OKLaboklab(36.73% 0.0019 -0.1255)
OKLCHoklch(36.73% 0.126 270.8)
XYZxyz(6.0892, 4.6474, 20.9940)
Luminance0.0465 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#283680 #807228
analogous
#286280 #283680 #462880
triadic
#283680 #802836 #368028
tetradic
#283680 #802862 #807228 #288046
square
#283680 #802862 #807228 #288046
split-complementary
#283680 #804628 #628028
monochromatic
#0B0F23 #192251 #283680 #374AAF #586ACB

Accessibility & contrast

On white

10.88
#283680 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.93
#283680 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283680
10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##283680#FFFFFF#000000##FFFFFF
##2836801.0010.881.9310.88
#FFFFFF10.881.0021.001.00
#0000001.9321.001.0021.00
##FFFFFF10.881.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004183
Deuteranopia (green-blind)
#00397F
Tritanopia (blue-blind)
#004855
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #283680;
/* rgb */ color: rgb(40, 54, 128);
/* oklch */ color: oklch(36.7% 0.126 270.8);
Tailwind
colors: {
  custom: {
    50: '#6d6ca5',
    500: '#283680',
    950: '#000000',
  },
}
SCSS
$custom: #283680;
$custom-light: #6d6ca5;
$custom-dark: #000000;
JSON
{
  "hex": "#283680",
  "rgb": {
    "r": 40,
    "g": 54,
    "b": 128
  },
  "hsl": {
    "h": 230.455,
    "s": 52.381,
    "l": 32.941
  },
  "oklch": {
    "l": 0.36731,
    "c": 0.12553,
    "h": 270.8
  },
  "luminance": 0.04648
}

Semantic roles & 50–950 ramp

primary
#283680
secondary
#B0A154
accent
#C54CDC
background
#F6F6FA
surface
#ECEBF4
border
#C7C6CE
text
#08070F
muted
#7A7A7F

Preview Lab

Preview with #283680

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

Preview Lab → · Contrast checker → · Palette generator →

#283680 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva