#666405
Closest named color: Mud Green (#606602). oklch(48.9% 0.104 108.3), rgb(102, 100, 5).
Aa
White text reads best on this color (6.19:1).
About this color
#666405 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 49%, its chroma 0.104 and its hue 108°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Green (#606602), ΔE 0.011 away. White text reads best on it, at 6.19:1.
| Hue family | Yellows |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.104) |
| Temperature | warm |
| Nearest name | Mud Green (#606602) |
| Black text | 3.39:1 |
| White text | 6.19:1 |
Values
| HEX | #666405 |
| RGB | rgb(102, 100, 5) |
| HSL | hsl(59, 91%, 21%) |
| OKLCH | oklch(48.9% 0.104 108.3) |
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 #666405 | 6.19:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #666405 | 3.39:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #666405 text on white | 6.19:1 | AA | Lc 80.8 | Fine for body text |
| #666405 text on black | 3.39:1 | AA large text | Lc -21.1 | 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
#F6F6F1
oklch(97.2% 0.007 106.5)
-
Step 100
100
#EAEBE0
oklch(93.6% 0.015 110.9)
-
Step 200
200
#DADBC6
oklch(88.5% 0.028 109.2)
-
Step 300
300
#C3C49E
oklch(81% 0.051 108.7)
-
Step 400
400
#A5A569
oklch(70.8% 0.081 108.3)
-
Step 500
500
#8F8E3E
oklch(63.1% 0.103 108.4)
-
Step 600
600
#7A7818
oklch(55.7% 0.112 108.3)
-
Step 700
700 (this color)
#666405
oklch(48.9% 0.104 108.3)
-
Step 800
800
#54520D
oklch(42.7% 0.086 107.8)
-
Step 900
900
#454415
oklch(37.7% 0.066 108)
-
Step 950
950
#28280E
oklch(27% 0.042 108.9)
#666405 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) | #6D5F00 | 0.017 |
| Deuteranopia (no green cones) | #6F6210 | 0.018 |
| Tritanopia (no blue cones) | #6E5D54 | 0.093 |
| Achromatopsia (no color) | #616161 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666405
#666405
oklch(48.9% 0.104 108.3)
- #5E5597
#5E5597
oklch(48.9% 0.104 288.2)
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 #666405, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Green #606602 ΔE 0.011
- Greeny Brown #696006 ΔE 0.013
- Browny Green #6F6C0A ΔE 0.029
- Brown Green #706C11 ΔE 0.030
- Camo Green #526525 ΔE 0.032
- Mud #735C12 ΔE 0.033
- Dark Olive Green #556B2F ΔE 0.034
- Dark Moss Green #606C38 ΔE 0.038
Use #666405 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.