#515B7B
Closest named color: Dusty Grape (#545775). oklch(47.6% 0.053 270.9), rgb(81, 91, 123).
Aa
White text reads best on this color (6.70:1).
About this color
#515B7B is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.053 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.013 away. White text reads best on it, at 6.70:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.13:1 |
| White text | 6.70:1 |
Values
| HEX | #515B7B |
| RGB | rgb(81, 91, 123) |
| HSL | hsl(226, 21%, 40%) |
| OKLCH | oklch(47.6% 0.053 270.9) |
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 #515B7B | 6.70:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #515B7B | 3.13:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #515B7B text on white | 6.70:1 | AA | Lc 83.1 | Fine for body text |
| #515B7B text on black | 3.13:1 | AA large text | Lc -18.9 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#BAC0D2
oklch(80.9% 0.026 271.1)
-
Step 400
400
#97A0BB
oklch(70.8% 0.041 270.8)
-
Step 500
500
#7D88AA
oklch(63% 0.053 270.8)
-
Step 600
600
#677296
oklch(55.7% 0.058 271.3)
-
Step 700
700 (this color)
#515B7B
oklch(47.6% 0.053 270.9)
-
Step 800
800
#464E68
oklch(42.8% 0.045 271.2)
-
Step 900
900
#3B4154
oklch(37.8% 0.034 271.1)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#515B7B 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) | #515E7C | 0.009 |
| Deuteranopia (no green cones) | #4D5A7A | 0.007 |
| Tritanopia (no blue cones) | #456166 | 0.048 |
| Achromatopsia (no color) | #5C5C5C | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515B7B
#515B7B
oklch(47.6% 0.053 270.9)
- #685B39
#685B39
oklch(47.5% 0.053 89.4)
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 #515B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.013
- YInMn Blue #415A77 ΔE 0.024
- Dusk #4E5481 ΔE 0.026
- Slate #516572 ΔE 0.038
- Denim #3B638C ΔE 0.038
- Dusky Blue #475F94 ΔE 0.041
- Twilight #4E518B ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.046
Use #515B7B 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.