#51604B
Closest named color: Dark Green Blue (#1F6357). oklch(47% 0.038 136.8), rgb(81, 96, 75).
Aa
White text reads best on this color (6.72:1).
About this color
#51604B is a medium-dark, muted green. In OKLCH its lightness is 47%, its chroma 0.038 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.052 away. White text reads best on it, at 6.72:1.
| Hue family | Greens |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.038) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #51604B |
| RGB | rgb(81, 96, 75) |
| HSL | hsl(103, 12%, 34%) |
| OKLCH | oklch(47% 0.038 136.8) |
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 #51604B | 6.72:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #51604B | 3.12:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #51604B text on white | 6.72:1 | AA | Lc 83.2 | Fine for body text |
| #51604B text on black | 3.12:1 | AA large text | Lc -18.8 | 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E8EBE7
oklch(93.7% 0.006 137.8)
-
Step 200
200
#D6DBD4
oklch(88.6% 0.011 136.6)
-
Step 300
300
#BBC4B8
oklch(81% 0.019 137.8)
-
Step 400
400
#98A593
oklch(70.6% 0.03 136.9)
-
Step 500
500
#7F8F79
oklch(63.1% 0.037 137.1)
-
Step 600
600
#687962
oklch(55.5% 0.04 137.6)
-
Step 700
700 (this color)
#51604B
oklch(47% 0.038 136.8)
-
Step 800
800
#475342
oklch(42.6% 0.031 136.5)
-
Step 900
900
#3C4538
oklch(37.8% 0.025 136)
-
Step 950
950
#232821
oklch(26.9% 0.015 136.7)
#51604B 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) | #625D4A | 0.026 |
| Deuteranopia (no green cones) | #5F5B4C | 0.026 |
| Tritanopia (no blue cones) | #515E5A | 0.027 |
| Achromatopsia (no color) | #5C5C5C | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51604B
#51604B
oklch(47% 0.038 136.8)
- #645469
#645469
oklch(46.9% 0.039 318.1)
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 #51604B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.052
- Camo Green #526525 ΔE 0.056
- Dark Moss Green #606C38 ΔE 0.056
- Dark Olive Green #556B2F ΔE 0.059
- Slate #516572 ΔE 0.059
- Pine #2B5D34 ΔE 0.062
- Dim Gray #696969 ΔE 0.063
- Army Green #4B5D16 ΔE 0.064
Use #51604B 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.