#646D13
Closest named color: Browny Green (#6F6C0A). oklch(51% 0.108 115.5), rgb(100, 109, 19).
Aa
White text reads best on this color (5.61:1).
About this color
#646D13 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.108 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Browny Green (#6F6C0A), ΔE 0.016 away. White text reads best on it, at 5.61:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Browny Green (#6F6C0A) |
| Black text | 3.73:1 |
| White text | 5.61:1 |
Values
| HEX | #646D13 |
| RGB | rgb(100, 109, 19) |
| HSL | hsl(66, 70%, 25%) |
| OKLCH | oklch(51% 0.108 115.5) |
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 #646D13 | 5.61:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #646D13 | 3.73:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #646D13 text on white | 5.61:1 | AA | Lc 78.0 | Fine for body text |
| #646D13 text on black | 3.73:1 | AA large text | Lc -23.8 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E9EBE0
oklch(93.6% 0.015 115)
-
Step 200
200
#D8DCC6
oklch(88.5% 0.03 115.4)
-
Step 300
300
#BFC59F
oklch(80.9% 0.052 114.9)
-
Step 400
400
#9EA76A
oklch(70.6% 0.083 115.4)
-
Step 500
500
#87913F
oklch(63.1% 0.107 115.3)
-
Step 600
600
#717B1A
oklch(55.6% 0.116 115.5)
-
Step 700
700 (this color)
#646D13
oklch(51% 0.108 115.5)
-
Step 800
800
#4D540E
oklch(42.6% 0.089 115.4)
-
Step 900
900
#404615
oklch(37.7% 0.07 115.8)
-
Step 950
950
#26290E
oklch(27.1% 0.044 114.6)
#646D13 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) | #756700 | 0.029 |
| Deuteranopia (no green cones) | #75681C | 0.032 |
| Tritanopia (no blue cones) | #6B665D | 0.096 |
| Achromatopsia (no color) | #676767 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646D13
#646D13
oklch(51% 0.108 115.5)
- #6C589D
#6C589D
oklch(51.1% 0.108 295.7)
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 #646D13, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Browny Green #6F6C0A ΔE 0.016
- Brown Green #706C11 ΔE 0.019
- Mud Green #606602 ΔE 0.022
- Muddy Green #657432 ΔE 0.028
- Dark Olive Green #556B2F ΔE 0.030
- Dark Moss Green #606C38 ΔE 0.033
- Greeny Brown #696006 ΔE 0.037
- Camo Green #526525 ΔE 0.040
Use #646D13 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.