#515B4B
Closest named color: Dark Green Blue (#1F6357). oklch(45.7% 0.028 133.7), rgb(81, 91, 75).
Aa
White text reads best on this color (7.12:1).
About this color
#515B4B is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.054 away. White text reads best on it, at 7.12:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.94:1 |
| White text | 7.12:1 |
Values
| HEX | #515B4B |
| RGB | rgb(81, 91, 75) |
| HSL | hsl(98, 10%, 33%) |
| OKLCH | oklch(45.7% 0.028 133.7) |
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 #515B4B | 7.12:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #515B4B | 2.94:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #515B4B text on white | 7.12:1 | AAA | Lc 84.7 | Fine for body text |
| #515B4B text on black | 2.94:1 | Fails | Lc -17.3 | 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 800.
-
Step 50
50
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E8EAE7
oklch(93.5% 0.005 134.9)
-
Step 200
200
#D7DAD4
oklch(88.4% 0.009 128.6)
-
Step 300
300
#BCC3B8
oklch(80.9% 0.017 133.8)
-
Step 400
400
#9AA494
oklch(70.6% 0.025 133.5)
-
Step 500
500
#818E7A
oklch(63% 0.033 134.5)
-
Step 600
600
#6B7862
oklch(55.5% 0.037 132.6)
-
Step 700
700
#596551
oklch(49% 0.034 132.9)
-
Step 800
800 (this color)
#515B4B
oklch(45.7% 0.028 133.7)
-
Step 900
900
#3D4438
oklch(37.6% 0.022 132.2)
-
Step 950
950
#242821
oklch(27% 0.014 131.7)
#515B4B 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) | #5C584A | 0.018 |
| Deuteranopia (no green cones) | #5B584C | 0.018 |
| Tritanopia (no blue cones) | #515A56 | 0.019 |
| Achromatopsia (no color) | #585858 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515B4B
#515B4B
oklch(45.7% 0.028 133.7)
- #5D5363
#5D5363
oklch(45.8% 0.028 312.9)
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 #515B4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.054
- Slate #516572 ΔE 0.060
- Pine #2B5D34 ΔE 0.064
- Dark Slate Gray #2F4F4F ΔE 0.065
- Camo Green #526525 ΔE 0.067
- Dim Gray #696969 ΔE 0.069
- Army Green #4B5D16 ΔE 0.070
- Dark Moss Green #606C38 ΔE 0.071
Use #515B4B 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.