#666F28
Closest named color: Muddy Green (#657432). oklch(51.9% 0.095 115.9), rgb(102, 111, 40).
Aa
White text reads best on this color (5.42:1).
About this color
#666F28 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.095 and its hue 116°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muddy Green (#657432), ΔE 0.015 away. White text reads best on it, at 5.42:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Muddy Green (#657432) |
| Black text | 3.86:1 |
| White text | 5.42:1 |
Values
| HEX | #666F28 |
| RGB | rgb(102, 111, 40) |
| HSL | hsl(68, 47%, 30%) |
| OKLCH | oklch(51.9% 0.095 115.9) |
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 #666F28 | 5.42:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #666F28 | 3.86:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #666F28 text on white | 5.42:1 | AA | Lc 77.0 | Fine for body text |
| #666F28 text on black | 3.86:1 | AA large text | Lc -24.8 | 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
#E9EBE1
oklch(93.6% 0.013 115.8)
-
Step 200
200
#D8DCC9
oklch(88.6% 0.026 116.6)
-
Step 300
300
#BFC5A3
oklch(81% 0.047 115.6)
-
Step 400
400
#9EA771
oklch(70.8% 0.075 116)
-
Step 500
500
#87914B
oklch(63.2% 0.095 115.9)
-
Step 600
600
#717A2D
oklch(55.6% 0.101 115.4)
-
Step 700
700 (this color)
#666F28
oklch(51.9% 0.095 115.9)
-
Step 800
800
#4D541C
oklch(42.7% 0.079 115.8)
-
Step 900
900
#40461D
oklch(37.8% 0.062 116.4)
-
Step 950
950
#252912
oklch(27% 0.039 117.2)
#666F28 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) | #776920 | 0.029 |
| Deuteranopia (no green cones) | #766A2D | 0.030 |
| Tritanopia (no blue cones) | #6C6960 | 0.082 |
| Achromatopsia (no color) | #6A6A6A | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666F28
#666F28
oklch(51.9% 0.095 115.9)
- #6D5C99
#6D5C99
oklch(51.7% 0.096 295.7)
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 #666F28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Green #657432 ΔE 0.015
- Brown Green #706C11 ΔE 0.019
- Browny Green #6F6C0A ΔE 0.019
- Dark Moss Green #606C38 ΔE 0.022
- Dark Olive Green #556B2F ΔE 0.029
- Mud Green #606602 ΔE 0.033
- Military Green #667C3E ΔE 0.038
- Murky Green #6C7A0E ΔE 0.041
Use #666F28 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.