#505B73
Closest named color: Dusty Grape (#545775). oklch(47.1% 0.041 265.6), rgb(80, 91, 115).
Aa
White text reads best on this color (6.80:1).
About this color
#505B73 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.041 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.014 away. White text reads best on it, at 6.80:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #505B73 |
| RGB | rgb(80, 91, 115) |
| HSL | hsl(221, 18%, 38%) |
| OKLCH | oklch(47.1% 0.041 265.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #505B73 | 6.80:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #505B73 | 3.08:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #505B73 text on white | 6.80:1 | AA | Lc 83.5 | Fine for body text |
| #505B73 text on black | 3.08:1 | AA large text | Lc -18.5 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#BAC1CE
oklch(80.9% 0.02 263)
-
Step 400
400
#97A1B5
oklch(70.8% 0.031 264.4)
-
Step 500
500
#7E89A3
oklch(63% 0.041 267.1)
-
Step 600
600
#67738E
oklch(55.6% 0.045 266.2)
-
Step 700
700 (this color)
#505B73
oklch(47.1% 0.041 265.6)
-
Step 800
800
#464F62
oklch(42.7% 0.034 265.1)
-
Step 900
900
#3B4250
oklch(37.8% 0.026 264.2)
-
Step 950
950
#22262F
oklch(26.9% 0.018 266.3)
#505B73 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #535D74 | 0.008 |
| Deuteranopia (no green cones) | #505972 | 0.006 |
| Tritanopia (no blue cones) | #466063 | 0.038 |
| Achromatopsia (no color) | #5B5B5B | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505B73
#505B73
oklch(47.1% 0.041 265.6)
- #665A40
#665A40
oklch(47.2% 0.042 86)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #505B73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.014
- YInMn Blue #415A77 ΔE 0.022
- Slate #516572 ΔE 0.032
- Dusk #4E5481 ΔE 0.036
- Denim #3B638C ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.052
- Dusky Blue #475F94 ΔE 0.053
- Twilight #4E518B ΔE 0.056
Use #505B73 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.