#646E59
Closest named color: Dim Gray (#696969). oklch(52.3% 0.034 128.3), rgb(100, 110, 89).
Aa
White text reads best on this color (5.36:1).
About this color
#646E59 is a medium-dark, muted green. In OKLCH its lightness is 52%, its chroma 0.034 and its hue 128°. 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 5.36:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.034) |
| Temperature | in between |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #646E59 |
| RGB | rgb(100, 110, 89) |
| HSL | hsl(89, 11%, 39%) |
| OKLCH | oklch(52.3% 0.034 128.3) |
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 #646E59 | 5.36:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #646E59 | 3.91:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #646E59 text on white | 5.36:1 | AA | Lc 76.7 | Fine for body text |
| #646E59 text on black | 3.91:1 | AA large text | Lc -25.0 | 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E9EAE7
oklch(93.5% 0.004 121.6)
-
Step 200
200
#D7DAD4
oklch(88.4% 0.009 128.6)
-
Step 300
300
#BDC3B8
oklch(80.9% 0.017 130.5)
-
Step 400
400
#9CA493
oklch(70.7% 0.026 127.7)
-
Step 500
500
#838E78
oklch(63.1% 0.035 129.1)
-
Step 600
600
#6D7861
oklch(55.7% 0.037 128.4)
-
Step 700
700 (this color)
#646E59
oklch(52.3% 0.034 128.3)
-
Step 800
800
#4A5242
oklch(42.6% 0.028 129.2)
-
Step 900
900
#3E4438
oklch(37.7% 0.021 129.1)
-
Step 950
950
#242821
oklch(27% 0.014 131.7)
#646E59 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) | #706B58 | 0.019 |
| Deuteranopia (no green cones) | #6F6A5A | 0.020 |
| Tritanopia (no blue cones) | #656C68 | 0.026 |
| Achromatopsia (no color) | #6B6B6B | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646E59
#646E59
oklch(52.3% 0.034 128.3)
- #6F6579
#6F6579
oklch(52.3% 0.033 307.8)
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 #646E59, 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 0.043
- Dark Taupe #7F684E ΔE 0.043
- Dark Moss Green #606C38 ΔE 0.045
- Battleship Gray #6C757D ΔE 0.056
- Dull Brown #876E4B ΔE 0.056
- Dirt Brown #836539 ΔE 0.058
- Muddy Green #657432 ΔE 0.059
Use #646E59 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.