#646D5A
Closest named color: Dim Gray (#696969). oklch(52.1% 0.031 128.1), rgb(100, 109, 90).
Aa
White text reads best on this color (5.41:1).
About this color
#646D5A is a medium-dark, muted green. In OKLCH its lightness is 52%, its chroma 0.031 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 0.031 away. White text reads best on it, at 5.41:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.031) |
| Temperature | in between |
| Nearest name | Dim Gray (#696969) |
| Black text | 3.87:1 |
| White text | 5.41:1 |
Values
| HEX | #646D5A |
| RGB | rgb(100, 109, 90) |
| HSL | hsl(88, 10%, 39%) |
| OKLCH | oklch(52.1% 0.031 128.1) |
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 #646D5A | 5.41:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #646D5A | 3.87:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #646D5A text on white | 5.41:1 | AA | Lc 77.0 | Fine for body text |
| #646D5A text on black | 3.87:1 | AA large text | Lc -24.7 | 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
#BEC3B8
oklch(81% 0.016 126.9)
-
Step 400
400
#9CA494
oklch(70.8% 0.025 128.9)
-
Step 500
500
#848D7A
oklch(63% 0.03 128)
-
Step 600
600
#6E7763
oklch(55.6% 0.032 127.2)
-
Step 700
700 (this color)
#646D5A
oklch(52.1% 0.031 128.1)
-
Step 800
800
#4B5243
oklch(42.8% 0.026 127.9)
-
Step 900
900
#3E4438
oklch(37.7% 0.021 129.1)
-
Step 950
950
#252821
oklch(27.1% 0.013 126.2)
#646D5A 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) | #6F6A59 | 0.018 |
| Deuteranopia (no green cones) | #6E6A5B | 0.017 |
| Tritanopia (no blue cones) | #656B68 | 0.025 |
| Achromatopsia (no color) | #6A6A6A | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646D5A
#646D5A
oklch(52.1% 0.031 128.1)
- #6E6577
#6E6577
oklch(52.1% 0.03 307.8)
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 #646D5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.031
- Dark Taupe #7F684E ΔE 0.043
- Grey Brown #7F7053 ΔE 0.044
- Dark Moss Green #606C38 ΔE 0.047
- Battleship Gray #6C757D ΔE 0.055
- Dull Brown #876E4B ΔE 0.057
- Slate #516572 ΔE 0.057
- Dirt Brown #836539 ΔE 0.059
Use #646D5A 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.