#646F05
Closest named color: Browny Green (#6F6C0A). oklch(51.5% 0.116 116.4), rgb(100, 111, 5).
Aa
White text reads best on this color (5.50:1).
About this color
#646F05 is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 51%, its chroma 0.116 and its hue 116°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Browny Green (#6F6C0A), ΔE 0.019 away. White text reads best on it, at 5.50:1.
| Hue family | Yellows |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Browny Green (#6F6C0A) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #646F05 |
| RGB | rgb(100, 111, 5) |
| HSL | hsl(66, 91%, 23%) |
| OKLCH | oklch(51.5% 0.116 116.4) |
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 #646F05 | 5.50:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #646F05 | 3.81:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #646F05 text on white | 5.50:1 | AA | Lc 77.3 | Fine for body text |
| #646F05 text on black | 3.81:1 | AA large text | Lc -24.4 | 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
#E9EBDF
oklch(93.5% 0.016 114.4)
-
Step 200
200
#D7DCC5
oklch(88.4% 0.031 117)
-
Step 300
300
#BEC69D
oklch(81% 0.056 116.6)
-
Step 400
400
#9DA866
oklch(70.7% 0.09 116.5)
-
Step 500
500
#869238
oklch(63.2% 0.115 116.2)
-
Step 600
600
#707C08
oklch(55.7% 0.125 116.4)
-
Step 700
700 (this color)
#646F05
oklch(51.5% 0.116 116.4)
-
Step 800
800
#4C5503
oklch(42.7% 0.097 116.6)
-
Step 900
900
#3F4610
oklch(37.6% 0.075 116.5)
-
Step 950
950
#25290C
oklch(26.9% 0.047 116.2)
#646F05 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) | #786800 | 0.036 |
| Deuteranopia (no green cones) | #776914 | 0.036 |
| Tritanopia (no blue cones) | #6B685E | 0.102 |
| Achromatopsia (no color) | #696969 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646F05
#646F05
oklch(51.5% 0.116 116.4)
- #6E57A2
#6E57A2
oklch(51.4% 0.117 296.2)
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 #646F05, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Browny Green #6F6C0A ΔE 0.019
- Brown Green #706C11 ΔE 0.022
- Mud Green #606602 ΔE 0.028
- Muddy Green #657432 ΔE 0.030
- Olive Green #677A04 ΔE 0.033
- Murky Green #6C7A0E ΔE 0.035
- Dark Olive Green #556B2F ΔE 0.037
- Dark Moss Green #606C38 ΔE 0.041
Use #646F05 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.