#646F5B
Closest named color: Dim Gray (#696969). oklch(52.6% 0.033 131.1), rgb(100, 111, 91).
Aa
White text reads best on this color (5.29:1).
About this color
#646F5B is a medium-dark, muted green. In OKLCH its lightness is 53%, its chroma 0.033 and its hue 131°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dim Gray (#696969), ΔE 0.034 away. White text reads best on it, at 5.29:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.033) |
| Temperature | in between |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #646F5B |
| RGB | rgb(100, 111, 91) |
| HSL | hsl(93, 10%, 40%) |
| OKLCH | oklch(52.6% 0.033 131.1) |
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 #646F5B | 5.29:1 | AA | Lc -81.7 | Fine for body text |
| Black text on #646F5B | 3.96:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #646F5B text on white | 5.29:1 | AA | Lc 76.3 | Fine for body text |
| #646F5B text on black | 3.96:1 | AA large text | Lc -25.4 | 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 600.
-
Step 50
50
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E9EAE7
oklch(93.5% 0.004 121.6)
-
Step 200
200
#D7DAD5
oklch(88.5% 0.007 132.4)
-
Step 300
300
#BDC3B9
oklch(81% 0.015 132.5)
-
Step 400
400
#9BA495
oklch(70.7% 0.024 132.6)
-
Step 500
500
#838E7A
oklch(63.2% 0.032 130.9)
-
Step 600
600 (this color)
#646F5B
oklch(52.6% 0.033 131.1)
-
Step 700
700
#5B6552
oklch(49.2% 0.032 130.2)
-
Step 800
800
#4A5243
oklch(42.7% 0.026 130.4)
-
Step 900
900
#3E4439
oklch(37.7% 0.02 130.8)
-
Step 950
950
#242821
oklch(27% 0.014 131.7)
#646F5B 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) | #716C5A | 0.020 |
| Deuteranopia (no green cones) | #6F6B5C | 0.020 |
| Tritanopia (no blue cones) | #656D69 | 0.025 |
| Achromatopsia (no color) | #6B6B6B | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646F5B
#646F5B
oklch(52.6% 0.033 131.1)
- #716679
#716679
oklch(52.7% 0.032 311.1)
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 #646F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.034
- Grey Brown #7F7053 ΔE 0.042
- Dark Taupe #7F684E ΔE 0.044
- Dark Moss Green #606C38 ΔE 0.048
- Battleship Gray #6C757D ΔE 0.053
- Dull Brown #876E4B ΔE 0.056
- Dirt Brown #836539 ΔE 0.060
- Muddy Green #657432 ΔE 0.060
Use #646F5B 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.