#818921
Closest named color: Olive (#808000). oklch(60.4% 0.123 114), rgb(129, 137, 33).
Aa
Black text reads best on this color (5.53:1).
About this color
#818921 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 60%, its chroma 0.123 and its hue 114°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Olive (#808000), ΔE 0.025 away. Black text reads best on it, at 5.53:1.
| Hue family | Yellows |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Olive (#808000) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #818921 |
| RGB | rgb(129, 137, 33) |
| HSL | hsl(65, 61%, 33%) |
| OKLCH | oklch(60.4% 0.123 114) |
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 #818921 | 3.79:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #818921 | 5.53:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #818921 text on white | 3.79:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #818921 text on black | 5.53:1 | AA | Lc -36.3 | 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 500.
-
Step 50
50
#F5F6F0
oklch(97.1% 0.008 114.2)
-
Step 100
100
#E9EBDE
oklch(93.5% 0.017 113.8)
-
Step 200
200
#D8DCC3
oklch(88.5% 0.034 114.5)
-
Step 300
300
#C0C699
oklch(81% 0.061 113.9)
-
Step 400
400
#A0A75F
oklch(70.6% 0.096 113.4)
-
Step 500
500 (this color)
#818921
oklch(60.4% 0.123 114)
-
Step 600
600
#737B00
oklch(55.7% 0.125 114.2)
-
Step 700
700
#606700
oklch(49.1% 0.111 114.3)
-
Step 800
800
#4F5400
oklch(42.7% 0.096 113.7)
-
Step 900
900
#414607
oklch(37.7% 0.08 114.4)
-
Step 950
950
#262908
oklch(27% 0.051 114.2)
#818921 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) | #93820A | 0.030 |
| Deuteranopia (no green cones) | #93842A | 0.033 |
| Tritanopia (no blue cones) | #8A8175 | 0.108 |
| Achromatopsia (no color) | #838383 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818921
#818921
oklch(60.4% 0.123 114)
- #8671C3
#8671C3
oklch(60.3% 0.123 294.2)
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 #818921, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive #808000 ΔE 0.025
- Swamp Green #748500 ΔE 0.027
- Khaki Green #728639 ΔE 0.029
- Olive Drab #6B8E23 ΔE 0.032
- Dark Yellow Green #728F02 ΔE 0.032
- Moss Green #658B38 ΔE 0.037
- Camo #7F8F4E ΔE 0.038
- Mossy Green #638B27 ΔE 0.040
Use #818921 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.