#818100
Closest named color: Olive (#808000). oklch(58.4% 0.127 109.8), rgb(129, 129, 0).
Aa
Black text reads best on this color (5.07:1).
About this color
#818100 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 58%, its chroma 0.127 and its hue 110°. Its hue sits on the warm side of the wheel. The nearest named color is Olive (#808000), ΔE 0.003 away. Black text reads best on it, at 5.07:1.
| Hue family | Yellows |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.127) |
| Temperature | warm |
| Nearest name | Olive (#808000) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #818100 |
| RGB | rgb(129, 129, 0) |
| HSL | hsl(60, 100%, 25%) |
| OKLCH | oklch(58.4% 0.127 109.8) |
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 #818100 | 4.13:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #818100 | 5.07:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #818100 text on white | 4.13:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #818100 text on black | 5.07:1 | AA | Lc -33.4 | 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
#F6F6F0
oklch(97.1% 0.008 106.5)
-
Step 100
100
#EAEBDF
oklch(93.6% 0.016 110.6)
-
Step 200
200
#DADBC4
oklch(88.4% 0.031 109)
-
Step 300
300
#C2C49A
oklch(80.8% 0.057 109.9)
-
Step 400
400
#A4A660
oklch(70.7% 0.092 110)
-
Step 500
500
#8E8F2F
oklch(63.1% 0.117 109.9)
-
Step 600
600 (this color)
#818100
oklch(58.4% 0.127 109.8)
-
Step 700
700
#656500
oklch(49.1% 0.107 109.8)
-
Step 800
800
#535300
oklch(42.8% 0.093 109.8)
-
Step 900
900
#444509
oklch(37.7% 0.077 110.6)
-
Step 950
950
#282809
oklch(26.9% 0.048 109.2)
#818100 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) | #8D7B00 | 0.024 |
| Deuteranopia (no green cones) | #8E7E14 | 0.024 |
| Tritanopia (no blue cones) | #8B786D | 0.115 |
| Achromatopsia (no color) | #7D7D7D | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818100
#818100
oklch(58.4% 0.127 109.8)
- #7B6CC1
#7B6CC1
oklch(58.3% 0.128 290)
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 #818100, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive #808000 ΔE 0.003
- Swamp Green #748500 ΔE 0.021
- Khaki Green #728639 ΔE 0.033
- Murky Green #6C7A0E ΔE 0.039
- Hazel #8E7618 ΔE 0.040
- Swamp #698339 ΔE 0.040
- Olive Drab #6B8E23 ΔE 0.042
- Dark Yellow Green #728F02 ΔE 0.043
Use #818100 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.