#515571
Closest named color: Dusty Grape (#545775). oklch(45.7% 0.046 278.1), rgb(81, 85, 113).
Aa
White text reads best on this color (7.27:1).
About this color
#515571 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.046 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.010 away. White text reads best on it, at 7.27:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.88:1 |
| White text | 7.27:1 |
Values
| HEX | #515571 |
| RGB | rgb(81, 85, 113) |
| HSL | hsl(233, 16%, 38%) |
| OKLCH | oklch(45.7% 0.046 278.1) |
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 #515571 | 7.27:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #515571 | 2.88:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #515571 text on white | 7.27:1 | AAA | Lc 85.3 | Fine for body text |
| #515571 text on black | 2.88:1 | Fails | Lc -16.8 | 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 800.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9EF
oklch(93.5% 0.008 278.6)
-
Step 200
200
#D6D8E3
oklch(88.4% 0.015 277.8)
-
Step 300
300
#BCBFD2
oklch(80.8% 0.027 278.6)
-
Step 400
400
#9A9EBC
oklch(70.6% 0.044 279.2)
-
Step 500
500
#8187AB
oklch(63.2% 0.055 277.3)
-
Step 600
600
#6B7096
oklch(55.6% 0.059 278.5)
-
Step 700
700
#595E80
oklch(49.1% 0.055 277.7)
-
Step 800
800 (this color)
#515571
oklch(45.7% 0.046 278.1)
-
Step 900
900
#3D4055
oklch(37.8% 0.036 278.2)
-
Step 950
950
#242532
oklch(26.9% 0.024 281.2)
#515571 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) | #4D5872 | 0.010 |
| Deuteranopia (no green cones) | #4B5670 | 0.010 |
| Tritanopia (no blue cones) | #495A5F | 0.040 |
| Achromatopsia (no color) | #575757 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515571
#515571
oklch(45.7% 0.046 278.1)
- #5E583A
#5E583A
oklch(45.8% 0.046 98.2)
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 #515571, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.010
- YInMn Blue #415A77 ΔE 0.025
- Dusk #4E5481 ΔE 0.028
- Twilight #4E518B ΔE 0.048
- Slate #516572 ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.053
- Denim #3B638C ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.057
Use #515571 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.