#646921
Closest named color: Mud Green (#606602). oklch(50.1% 0.094 113.1), rgb(100, 105, 33).
Aa
White text reads best on this color (5.85:1).
About this color
#646921 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 50%, its chroma 0.094 and its hue 113°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mud Green (#606602), ΔE 0.020 away. White text reads best on it, at 5.85:1.
| Hue family | Yellows |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Mud Green (#606602) |
| Black text | 3.58:1 |
| White text | 5.85:1 |
Values
| HEX | #646921 |
| RGB | rgb(100, 105, 33) |
| HSL | hsl(64, 52%, 27%) |
| OKLCH | oklch(50.1% 0.094 113.1) |
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 #646921 | 5.85:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #646921 | 3.58:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #646921 text on white | 5.85:1 | AA | Lc 79.2 | Fine for body text |
| #646921 text on black | 3.58:1 | AA large text | Lc -22.6 | 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
#EAEBE1
oklch(93.7% 0.013 111.3)
-
Step 200
200
#D9DBC8
oklch(88.5% 0.026 111.8)
-
Step 300
300
#C0C4A3
oklch(80.8% 0.045 113)
-
Step 400
400
#A0A671
oklch(70.7% 0.073 113.5)
-
Step 500
500
#8A904A
oklch(63.2% 0.094 113.1)
-
Step 600
600
#74792B
oklch(55.6% 0.101 112.7)
-
Step 700
700 (this color)
#646921
oklch(50.1% 0.094 113.1)
-
Step 800
800
#4F531B
oklch(42.6% 0.078 113.1)
-
Step 900
900
#42451C
oklch(37.7% 0.061 112.8)
-
Step 950
950
#262811
oklch(26.8% 0.038 113.1)
#646921 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) | #716417 | 0.023 |
| Deuteranopia (no green cones) | #716526 | 0.025 |
| Tritanopia (no blue cones) | #6B635A | 0.082 |
| Achromatopsia (no color) | #656565 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646921
#646921
oklch(50.1% 0.094 113.1)
- #665894
#665894
oklch(50% 0.095 293.4)
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 #646921, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Green #606602 ΔE 0.020
- Dark Moss Green #606C38 ΔE 0.022
- Dark Olive Green #556B2F ΔE 0.022
- Brown Green #706C11 ΔE 0.023
- Browny Green #6F6C0A ΔE 0.023
- Greeny Brown #696006 ΔE 0.026
- Camo Green #526525 ΔE 0.030
- Muddy Green #657432 ΔE 0.032
Use #646921 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.