#515E6A
Closest named color: Slate (#516572). oklch(47.5% 0.025 246.2), rgb(81, 94, 106).
Aa
White text reads best on this color (6.64:1).
About this color
#515E6A is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.022 away. White text reads best on it, at 6.64:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #515E6A |
| RGB | rgb(81, 94, 106) |
| HSL | hsl(209, 13%, 37%) |
| OKLCH | oklch(47.5% 0.025 246.2) |
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 #515E6A | 6.64:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #515E6A | 3.15:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #515E6A text on white | 6.64:1 | AA | Lc 82.9 | Fine for body text |
| #515E6A text on black | 3.15:1 | AA large text | Lc -19.1 | 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
#F4F5F6
oklch(97% 0.002 247.8)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D6DADD
oklch(88.6% 0.006 239.8)
-
Step 300
300
#BAC2C8
oklch(81% 0.012 239.9)
-
Step 400
400
#97A2AC
oklch(70.7% 0.019 245.5)
-
Step 500
500
#7E8B98
oklch(63.1% 0.025 248.2)
-
Step 600
600
#677583
oklch(55.6% 0.028 248.3)
-
Step 700
700 (this color)
#515E6A
oklch(47.5% 0.025 246.2)
-
Step 800
800
#46505A
oklch(42.6% 0.021 248.3)
-
Step 900
900
#3B434A
oklch(37.8% 0.016 244.6)
-
Step 950
950
#22272B
oklch(26.9% 0.01 242.1)
#515E6A 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) | #595E6B | 0.012 |
| Deuteranopia (no green cones) | #565B6A | 0.011 |
| Tritanopia (no blue cones) | #4A6162 | 0.021 |
| Achromatopsia (no color) | #5C5C5C | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515E6A
#515E6A
oklch(47.5% 0.025 246.2)
- #665A4E
#665A4E
oklch(47.6% 0.024 67.2)
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 #515E6A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.022
- Dusty Grape #545775 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.035
- Dim Gray #696969 ΔE 0.052
- Dusk #4E5481 ΔE 0.056
- Denim #3B638C ΔE 0.057
- Dark Aqua #05696B ΔE 0.066
- Petrol #005F6A ΔE 0.066
Use #515E6A 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.