#51751F
Closest named color: Olive Green (#677A04). oklch(51.7% 0.12 129.6), rgb(81, 117, 31).
Aa
White text reads best on this color (5.36:1).
About this color
#51751F is a medium-dark, moderately saturated green. In OKLCH its lightness is 52%, its chroma 0.120 and its hue 130°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Green (#677A04), ΔE 0.035 away. White text reads best on it, at 5.36:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.120) |
| Temperature | in between |
| Nearest name | Olive Green (#677A04) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #51751F |
| RGB | rgb(81, 117, 31) |
| HSL | hsl(85, 58%, 29%) |
| OKLCH | oklch(51.7% 0.12 129.6) |
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 #51751F | 5.36:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #51751F | 3.91:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #51751F text on white | 5.36:1 | AA | Lc 76.6 | Fine for body text |
| #51751F text on black | 3.91:1 | AA large text | Lc -25.2 | 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
#F4F7F1
oklch(97.2% 0.009 128.6)
-
Step 100
100
#E6ECE1
oklch(93.5% 0.016 130.4)
-
Step 200
200
#D2DEC8
oklch(88.5% 0.032 130.6)
-
Step 300
300
#B5C9A1
oklch(81% 0.059 129.3)
-
Step 400
400
#8EAC6D
oklch(70.6% 0.093 129.2)
-
Step 500
500
#729745
oklch(63% 0.118 129.4)
-
Step 600
600
#5A8123
oklch(55.5% 0.129 129.5)
-
Step 700
700 (this color)
#51751F
oklch(51.7% 0.12 129.6)
-
Step 800
800
#3D5915
oklch(42.7% 0.099 129.4)
-
Step 900
900
#344919
oklch(37.6% 0.077 129.4)
-
Step 950
950
#1E2B10
oklch(26.9% 0.049 130.3)
#51751F 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) | #7B6C11 | 0.063 |
| Deuteranopia (no green cones) | #766A27 | 0.063 |
| Tritanopia (no blue cones) | #537064 | 0.093 |
| Achromatopsia (no color) | #6B6B6B | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51751F
#51751F
oklch(51.7% 0.12 129.6)
- #7D529C
#7D529C
oklch(51.7% 0.121 309.6)
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 #51751F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Green #677A04 ΔE 0.035
- Muddy Green #657432 ΔE 0.036
- Dark Olive Green #556B2F ΔE 0.038
- Murky Green #6C7A0E ΔE 0.041
- Mud Green #606602 ΔE 0.044
- Tree Green #2A7E19 ΔE 0.045
- Browny Green #6F6C0A ΔE 0.045
- Dark Grass Green #388004 ΔE 0.046
Use #51751F 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.