#66810F
Closest named color: Olive Green (#677A04). oklch(56.2% 0.133 123.4), rgb(102, 129, 15).
Aa
Black text reads best on this color (4.71:1).
About this color
#66810F is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 56%, its chroma 0.133 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive Green (#677A04), ΔE 0.020 away. Black text reads best on it, at 4.71:1.
| Hue family | Yellows |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Olive Green (#677A04) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #66810F |
| RGB | rgb(102, 129, 15) |
| HSL | hsl(74, 79%, 28%) |
| OKLCH | oklch(56.2% 0.133 123.4) |
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 #66810F | 4.45:1 | AA large text | Lc -76.2 | Fine for body text |
| Black text on #66810F | 4.71:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #66810F text on white | 4.45:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #66810F text on black | 4.71:1 | AA | Lc -30.9 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E7ECDF
oklch(93.6% 0.018 124)
-
Step 200
200
#D5DDC5
oklch(88.5% 0.033 122.1)
-
Step 300
300
#B9C89D
oklch(81% 0.061 123.4)
-
Step 400
400
#95AB66
oklch(70.8% 0.097 123.3)
-
Step 500
500
#7B9539
oklch(63% 0.123 123.3)
-
Step 600
600 (this color)
#66810F
oklch(56.2% 0.133 123.4)
-
Step 700
700
#546B00
oklch(49.1% 0.121 123.1)
-
Step 800
800
#445804
oklch(42.8% 0.104 123.7)
-
Step 900
900
#394811
oklch(37.6% 0.08 123.5)
-
Step 950
950
#222A0C
oklch(26.9% 0.05 122.3)
#66810F 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) | #897800 | 0.055 |
| Deuteranopia (no green cones) | #86771D | 0.057 |
| Tritanopia (no blue cones) | #6C7A6D | 0.110 |
| Achromatopsia (no color) | #777777 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66810F
#66810F
oklch(56.2% 0.133 123.4)
- #865FB4
#865FB4
oklch(56.3% 0.132 303.6)
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 #66810F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Green #677A04 ΔE 0.020
- Murky Green #6C7A0E ΔE 0.021
- Swamp Green #748500 ΔE 0.024
- Mossy Green #638B27 ΔE 0.028
- Sap Green #5C8B15 ΔE 0.030
- Swamp #698339 ΔE 0.030
- Moss Green #658B38 ΔE 0.034
- Olive #808000 ΔE 0.037
Use #66810F 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.