#515E6C
Closest named color: Slate (#516572). oklch(47.6% 0.028 250.3), rgb(81, 94, 108).
Aa
White text reads best on this color (6.62:1).
About this color
#515E6C is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.021 away. White text reads best on it, at 6.62:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.16:1 |
| White text | 6.62:1 |
Values
| HEX | #515E6C |
| RGB | rgb(81, 94, 108) |
| HSL | hsl(211, 14%, 37%) |
| OKLCH | oklch(47.6% 0.028 250.3) |
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 #515E6C | 6.62:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #515E6C | 3.16:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #515E6C text on white | 6.62:1 | AA | Lc 82.8 | Fine for body text |
| #515E6C text on black | 3.16:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D5D9DE
oklch(88.4% 0.008 253.9)
-
Step 300
300
#BAC1C9
oklch(80.8% 0.014 251.6)
-
Step 400
400
#97A2AE
oklch(70.7% 0.022 250.5)
-
Step 500
500
#7D8B9A
oklch(63.1% 0.028 250.1)
-
Step 600
600
#667585
oklch(55.6% 0.031 250.1)
-
Step 700
700 (this color)
#515E6C
oklch(47.6% 0.028 250.3)
-
Step 800
800
#46505B
oklch(42.7% 0.022 250.8)
-
Step 900
900
#3B424B
oklch(37.6% 0.018 254.7)
-
Step 950
950
#22272C
oklch(27% 0.012 248.3)
#515E6C 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) | #595E6D | 0.012 |
| Deuteranopia (no green cones) | #565B6C | 0.011 |
| Tritanopia (no blue cones) | #4A6162 | 0.024 |
| Achromatopsia (no color) | #5D5D5D | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515E6C
#515E6C
oklch(47.6% 0.028 250.3)
- #675A4C
#675A4C
oklch(47.6% 0.028 69.2)
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 #515E6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.021
- Dusty Grape #545775 ΔE 0.030
- YInMn Blue #415A77 ΔE 0.033
- Dusk #4E5481 ΔE 0.053
- Dim Gray #696969 ΔE 0.053
- Denim #3B638C ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.065
- Dusky Blue #475F94 ΔE 0.065
Use #515E6C 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.