#515F81
Closest named color: Dusty Grape (#545775). oklch(48.8% 0.058 267), rgb(81, 95, 129).
Aa
White text reads best on this color (6.35:1).
About this color
#515F81 is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.058 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.026 away. White text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #515F81 |
| RGB | rgb(81, 95, 129) |
| HSL | hsl(222, 23%, 41%) |
| OKLCH | oklch(48.8% 0.058 267) |
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 #515F81 | 6.35:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #515F81 | 3.30:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #515F81 text on white | 6.35:1 | AA | Lc 81.6 | Fine for body text |
| #515F81 text on black | 3.30:1 | AA large text | Lc -20.3 | 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
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D4D9E4
oklch(88.5% 0.016 266.3)
-
Step 300
300
#B8C1D3
oklch(81% 0.027 264.4)
-
Step 400
400
#94A0BD
oklch(70.6% 0.045 267.5)
-
Step 500
500
#7A89AD
oklch(63.1% 0.057 267.1)
-
Step 600
600
#637398
oklch(55.7% 0.061 266.3)
-
Step 700
700 (this color)
#515F81
oklch(48.8% 0.058 267)
-
Step 800
800
#434E6A
oklch(42.6% 0.049 267.7)
-
Step 900
900
#394156
oklch(37.7% 0.038 268.4)
-
Step 950
950
#212632
oklch(26.9% 0.024 267.1)
#515F81 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) | #546283 | 0.010 |
| Deuteranopia (no green cones) | #4F5D80 | 0.007 |
| Tritanopia (no blue cones) | #42666B | 0.052 |
| Achromatopsia (no color) | #5F5F5F | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515F81
#515F81
oklch(48.8% 0.058 267)
- #6E5E39
#6E5E39
oklch(48.8% 0.057 86.9)
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 #515F81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.026
- Denim #3B638C ΔE 0.030
- YInMn Blue #415A77 ΔE 0.031
- Dusky Blue #475F94 ΔE 0.033
- Dusk #4E5481 ΔE 0.034
- Slate #516572 ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.048
Use #515F81 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.