#646D28
Closest named color: Dark Moss Green (#606C38). oklch(51.2% 0.093 116), rgb(100, 109, 40).
Aa
White text reads best on this color (5.58:1).
About this color
#646D28 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.093 and its hue 116°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.018 away. White text reads best on it, at 5.58:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.75:1 |
| White text | 5.58:1 |
Values
| HEX | #646D28 |
| RGB | rgb(100, 109, 40) |
| HSL | hsl(68, 46%, 29%) |
| OKLCH | oklch(51.2% 0.093 116) |
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 #646D28 | 5.58:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #646D28 | 3.75:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #646D28 text on white | 5.58:1 | AA | Lc 77.9 | Fine for body text |
| #646D28 text on black | 3.75:1 | AA large text | Lc -23.9 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E9EBE1
oklch(93.6% 0.013 115.8)
-
Step 200
200
#D8DBC9
oklch(88.4% 0.024 114.6)
-
Step 300
300
#BFC5A4
oklch(81% 0.045 115.8)
-
Step 400
400
#9EA773
oklch(70.8% 0.072 116.3)
-
Step 500
500
#86904D
oklch(63% 0.091 116.1)
-
Step 600
600
#707A2F
oklch(55.5% 0.1 116.1)
-
Step 700
700 (this color)
#646D28
oklch(51.2% 0.093 116)
-
Step 800
800
#4D541E
oklch(42.7% 0.077 115.9)
-
Step 900
900
#40451E
oklch(37.6% 0.059 115.4)
-
Step 950
950
#252912
oklch(27% 0.039 117.2)
#646D28 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) | #746720 | 0.028 |
| Deuteranopia (no green cones) | #74682C | 0.030 |
| Tritanopia (no blue cones) | #6A675E | 0.080 |
| Achromatopsia (no color) | #686868 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646D28
#646D28
oklch(51.2% 0.093 116)
- #6C5B96
#6C5B96
oklch(51.3% 0.093 296.2)
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 #646D28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.018
- Muddy Green #657432 ΔE 0.021
- Brown Green #706C11 ΔE 0.021
- Browny Green #6F6C0A ΔE 0.022
- Dark Olive Green #556B2F ΔE 0.023
- Mud Green #606602 ΔE 0.029
- Greeny Brown #696006 ΔE 0.037
- Camo Green #526525 ΔE 0.038
Use #646D28 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.