#666F13
Closest named color: Browny Green (#6F6C0A). oklch(51.7% 0.11 115.4), rgb(102, 111, 19).
Aa
White text reads best on this color (5.45:1).
About this color
#666F13 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.110 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 0.015 away. White text reads best on it, at 5.45:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Browny Green (#6F6C0A) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #666F13 |
| RGB | rgb(102, 111, 19) |
| HSL | hsl(66, 71%, 25%) |
| OKLCH | oklch(51.7% 0.11 115.4) |
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 #666F13 | 5.45:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #666F13 | 3.84:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #666F13 text on white | 5.45:1 | AA | Lc 77.1 | Fine for body text |
| #666F13 text on black | 3.84:1 | AA large text | Lc -24.6 | 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
#BFC59E
oklch(80.9% 0.053 114.7)
-
Step 400
400
#9EA769
oklch(70.6% 0.084 115.3)
-
Step 500
500
#87913E
oklch(63.1% 0.108 115.3)
-
Step 600
600
#717B16
oklch(55.6% 0.119 115.5)
-
Step 700
700 (this color)
#666F13
oklch(51.7% 0.11 115.4)
-
Step 800
800
#4D540C
oklch(42.6% 0.09 115.4)
-
Step 900
900
#404614
oklch(37.7% 0.071 115.7)
-
Step 950
950
#26290D
oklch(27% 0.045 114.6)
#666F13 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) | #786900 | 0.030 |
| Deuteranopia (no green cones) | #776A1C | 0.032 |
| Tritanopia (no blue cones) | #6D685E | 0.096 |
| Achromatopsia (no color) | #696969 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #666F13
#666F13
oklch(51.7% 0.11 115.4)
- #6E59A0
#6E59A0
oklch(51.7% 0.111 295.9)
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 #666F13, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Browny Green #6F6C0A ΔE 0.015
- Brown Green #706C11 ΔE 0.017
- Muddy Green #657432 ΔE 0.024
- Mud Green #606602 ΔE 0.029
- Olive Green #677A04 ΔE 0.034
- Murky Green #6C7A0E ΔE 0.035
- Dark Olive Green #556B2F ΔE 0.035
- Dark Moss Green #606C38 ΔE 0.036
Use #666F13 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.