#515B4F
Closest named color: Dark Green Blue (#1F6357). oklch(45.9% 0.023 140.5), rgb(81, 91, 79).
Aa
White text reads best on this color (7.09:1).
About this color
#515B4F is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.023. 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 7.09:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.95:1 |
| White text | 7.09:1 |
Values
| HEX | #515B4F |
| RGB | rgb(81, 91, 79) |
| HSL | hsl(110, 7%, 33%) |
| OKLCH | oklch(45.9% 0.023 140.5) |
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 #515B4F | 7.09:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #515B4F | 2.95:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #515B4F text on white | 7.09:1 | AAA | Lc 84.6 | Fine for body text |
| #515B4F text on black | 2.95:1 | Fails | Lc -17.4 | 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
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAE8
oklch(93.5% 0.003 145.5)
-
Step 200
200
#D6DAD6
oklch(88.4% 0.007 145.5)
-
Step 300
300
#BCC3BB
oklch(80.9% 0.013 141.8)
-
Step 400
400
#9AA498
oklch(70.7% 0.021 140.5)
-
Step 500
500
#818E7E
oklch(63.1% 0.028 139.8)
-
Step 600
600
#6A7868
oklch(55.6% 0.029 141.7)
-
Step 700
700
#596556
oklch(49.2% 0.028 139.4)
-
Step 800
800 (this color)
#515B4F
oklch(45.9% 0.023 140.5)
-
Step 900
900
#3D443B
oklch(37.7% 0.018 138.7)
-
Step 950
950
#242823
oklch(27.1% 0.011 139.4)
#515B4F 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) | #5C594E | 0.017 |
| Deuteranopia (no green cones) | #5A5850 | 0.017 |
| Tritanopia (no blue cones) | #515A58 | 0.016 |
| Achromatopsia (no color) | #585858 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515B4F
#515B4F
oklch(45.9% 0.023 140.5)
- #5E5460
#5E5460
oklch(46% 0.023 320.6)
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 #515B4F, 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 0.055
- Dark Slate Gray #2F4F4F ΔE 0.064
- Dim Gray #696969 ΔE 0.066
- Dusty Grape #545775 ΔE 0.068
- YInMn Blue #415A77 ΔE 0.068
- Pine #2B5D34 ΔE 0.069
- Dark Aqua #05696B ΔE 0.071
Use #515B4F 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.