#646B23
Closest named color: Dark Moss Green (#606C38). oklch(50.6% 0.095 114.5), rgb(100, 107, 35).
Aa
White text reads best on this color (5.72:1).
About this color
#646B23 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.095 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.020 away. White text reads best on it, at 5.72:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #646B23 |
| RGB | rgb(100, 107, 35) |
| HSL | hsl(66, 51%, 28%) |
| OKLCH | oklch(50.6% 0.095 114.5) |
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 #646B23 | 5.72:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #646B23 | 3.66:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #646B23 text on white | 5.72:1 | AA | Lc 78.6 | Fine for body text |
| #646B23 text on black | 3.66:1 | AA large text | Lc -23.2 | 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
#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
#BFC5A3
oklch(81% 0.047 115.6)
-
Step 400
400
#9FA671
oklch(70.6% 0.073 114.4)
-
Step 500
500
#88904A
oklch(63.1% 0.094 114.5)
-
Step 600
600
#727A2B
oklch(55.6% 0.103 114.7)
-
Step 700
700 (this color)
#646B23
oklch(50.6% 0.095 114.5)
-
Step 800
800
#4E541B
oklch(42.8% 0.079 114.9)
-
Step 900
900
#41451C
oklch(37.6% 0.061 114)
-
Step 950
950
#262912
oklch(27.1% 0.039 115.1)
#646B23 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) | #73661A | 0.025 |
| Deuteranopia (no green cones) | #726728 | 0.026 |
| Tritanopia (no blue cones) | #6B655C | 0.083 |
| Achromatopsia (no color) | #666666 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646B23
#646B23
oklch(50.6% 0.095 114.5)
- #695996
#695996
oklch(50.6% 0.096 294.8)
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 #646B23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.020
- Brown Green #706C11 ΔE 0.021
- Browny Green #6F6C0A ΔE 0.021
- Dark Olive Green #556B2F ΔE 0.022
- Mud Green #606602 ΔE 0.023
- Muddy Green #657432 ΔE 0.027
- Greeny Brown #696006 ΔE 0.031
- Camo Green #526525 ΔE 0.034
Use #646B23 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.