#646138
Closest named color: Dark Moss Green (#606C38). oklch(48.5% 0.06 104.8), rgb(100, 97, 56).
Aa
White text reads best on this color (6.34:1).
About this color
#646138 is a medium-dark, muted brown. In OKLCH its lightness is 48%, its chroma 0.060 and its hue 105°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Moss Green (#606C38), ΔE 0.034 away. White text reads best on it, at 6.34:1.
| Hue family | Browns |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.060) |
| Temperature | warm |
| Nearest name | Dark Moss Green (#606C38) |
| Black text | 3.30:1 |
| White text | 6.34:1 |
Values
| HEX | #646138 |
| RGB | rgb(100, 97, 56) |
| HSL | hsl(56, 28%, 31%) |
| OKLCH | oklch(48.5% 0.06 104.8) |
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 #646138 | 6.34:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #646138 | 3.30:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #646138 text on white | 6.34:1 | AA | Lc 81.6 | Fine for body text |
| #646138 text on black | 3.30:1 | AA large text | Lc -20.3 | 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
#F6F6F3
oklch(97.2% 0.004 106.5)
-
Step 100
100
#EAEAE4
oklch(93.5% 0.008 106.6)
-
Step 200
200
#DADACE
oklch(88.5% 0.016 106.7)
-
Step 300
300
#C3C2AD
oklch(80.9% 0.029 104.8)
-
Step 400
400
#A5A381
oklch(70.8% 0.047 104.7)
-
Step 500
500
#8F8C62
oklch(63.2% 0.059 104.5)
-
Step 600
600
#797648
oklch(55.7% 0.065 105.1)
-
Step 700
700 (this color)
#646138
oklch(48.5% 0.06 104.8)
-
Step 800
800
#535130
oklch(42.8% 0.05 105.3)
-
Step 900
900
#45432B
oklch(37.8% 0.038 104)
-
Step 950
950
#282719
oklch(26.9% 0.024 104.5)
#646138 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) | #685E35 | 0.010 |
| Deuteranopia (no green cones) | #69603A | 0.010 |
| Tritanopia (no blue cones) | #6A5C57 | 0.054 |
| Achromatopsia (no color) | #5F5F5F | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646138
#646138
oklch(48.5% 0.06 104.8)
- #5B5A80
#5B5A80
oklch(48.4% 0.061 285.1)
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 #646138, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Moss Green #606C38 ΔE 0.034
- Mud #735C12 ΔE 0.037
- Greeny Brown #696006 ΔE 0.040
- Camo Green #526525 ΔE 0.042
- Dark Olive Green #556B2F ΔE 0.042
- Olive Brown #645403 ΔE 0.049
- Mud Green #606602 ΔE 0.051
- Dirt Brown #836539 ΔE 0.055
Use #646138 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.