#646F23
Closest named color: Muddy Green (#657432). oklch(51.6% 0.1 117.1), rgb(100, 111, 35).
Aa
White text reads best on this color (5.46:1).
About this color
#646F23 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.100 and its hue 117°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Muddy Green (#657432), ΔE 0.018 away. White text reads best on it, at 5.46:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Muddy Green (#657432) |
| Black text | 3.83:1 |
| White text | 5.46:1 |
Values
| HEX | #646F23 |
| RGB | rgb(100, 111, 35) |
| HSL | hsl(69, 52%, 29%) |
| OKLCH | oklch(51.6% 0.1 117.1) |
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 #646F23 | 5.46:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #646F23 | 3.83:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #646F23 text on white | 5.46:1 | AA | Lc 77.2 | Fine for body text |
| #646F23 text on black | 3.83:1 | AA large text | Lc -24.5 | 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
#E9EBE1
oklch(93.6% 0.013 115.8)
-
Step 200
200
#D7DCC8
oklch(88.5% 0.027 118.4)
-
Step 300
300
#BEC5A2
oklch(80.9% 0.048 116.7)
-
Step 400
400
#9DA76F
oklch(70.7% 0.077 116.7)
-
Step 500
500
#859148
oklch(63% 0.099 117)
-
Step 600
600
#6F7B28
oklch(55.6% 0.107 117.1)
-
Step 700
700 (this color)
#646F23
oklch(51.6% 0.1 117.1)
-
Step 800
800
#4C5519
oklch(42.8% 0.083 117.3)
-
Step 900
900
#3F461B
oklch(37.7% 0.065 117.3)
-
Step 950
950
#252911
oklch(27% 0.04 117)
#646F23 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) | #776919 | 0.032 |
| Deuteranopia (no green cones) | #766A28 | 0.033 |
| Tritanopia (no blue cones) | #6A695F | 0.085 |
| Achromatopsia (no color) | #696969 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646F23
#646F23
oklch(51.6% 0.1 117.1)
- #6E5B9A
#6E5B9A
oklch(51.7% 0.099 296.7)
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 #646F23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muddy Green #657432 ΔE 0.018
- Browny Green #6F6C0A ΔE 0.019
- Brown Green #706C11 ΔE 0.019
- Dark Moss Green #606C38 ΔE 0.026
- Dark Olive Green #556B2F ΔE 0.028
- Mud Green #606602 ΔE 0.030
- Murky Green #6C7A0E ΔE 0.040
- Olive Green #677A04 ΔE 0.040
Use #646F23 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.