#646F0F
Closest named color: Browny Green (#6F6C0A). oklch(51.5% 0.113 116.6), rgb(100, 111, 15).
Aa
White text reads best on this color (5.49:1).
About this color
#646F0F is a medium-dark, moderately saturated yellow. In OKLCH its lightness is 52%, its chroma 0.113 and its hue 117°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Browny Green (#6F6C0A), ΔE 0.018 away. White text reads best on it, at 5.49:1.
| Hue family | Yellows |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.113) |
| Temperature | in between |
| Nearest name | Browny Green (#6F6C0A) |
| Black text | 3.82:1 |
| White text | 5.49:1 |
Values
| HEX | #646F0F |
| RGB | rgb(100, 111, 15) |
| HSL | hsl(67, 76%, 25%) |
| OKLCH | oklch(51.5% 0.113 116.6) |
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 #646F0F | 5.49:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #646F0F | 3.82:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #646F0F text on white | 5.49:1 | AA | Lc 77.3 | Fine for body text |
| #646F0F text on black | 3.82:1 | 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
#E9EBE0
oklch(93.6% 0.015 115)
-
Step 200
200
#D7DCC6
oklch(88.5% 0.03 117.4)
-
Step 300
300
#BEC69E
oklch(81% 0.055 116.8)
-
Step 400
400
#9DA868
oklch(70.7% 0.087 116.6)
-
Step 500
500
#85923C
oklch(63.1% 0.112 116.9)
-
Step 600
600
#6F7C13
oklch(55.7% 0.122 117)
-
Step 700
700 (this color)
#646F0F
oklch(51.5% 0.113 116.6)
-
Step 800
800
#4C5509
oklch(42.7% 0.094 116.8)
-
Step 900
900
#3F4613
oklch(37.6% 0.073 116.7)
-
Step 950
950
#25290D
oklch(26.9% 0.046 116.3)
#646F0F 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) | #776900 | 0.032 |
| Deuteranopia (no green cones) | #766A19 | 0.033 |
| Tritanopia (no blue cones) | #6B685E | 0.098 |
| Achromatopsia (no color) | #696969 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646F0F
#646F0F
oklch(51.5% 0.113 116.6)
- #6E58A0
#6E58A0
oklch(51.5% 0.113 296.3)
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 #646F0F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Browny Green #6F6C0A ΔE 0.018
- Brown Green #706C11 ΔE 0.020
- Muddy Green #657432 ΔE 0.027
- Mud Green #606602 ΔE 0.027
- Olive Green #677A04 ΔE 0.034
- Dark Olive Green #556B2F ΔE 0.035
- Murky Green #6C7A0E ΔE 0.036
- Dark Moss Green #606C38 ΔE 0.038
Use #646F0F 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.