#405143
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.6% 0.031 150), rgb(64, 81, 67).
Aa
White text reads best on this color (8.48:1).
About this color
#405143 is a dark, muted green. In OKLCH its lightness is 42%, its chroma 0.031 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.030 away. White text reads best on it, at 8.48:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | muted (0.031) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.47:1 |
| White text | 8.48:1 |
Values
| HEX | #405143 |
| RGB | rgb(64, 81, 67) |
| HSL | hsl(131, 12%, 28%) |
| OKLCH | oklch(41.6% 0.031 150) |
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 #405143 | 8.48:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #405143 | 2.47:1 | Fails | Lc 14.8 | Not readable |
| #405143 text on white | 8.48:1 | AAA | Lc 89.2 | Fine for body text |
| #405143 text on black | 2.47:1 | Fails | Lc -13.0 | Not readable |
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 800.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D5DBD6
oklch(88.5% 0.009 150.7)
-
Step 300
300
#B9C4BA
oklch(80.9% 0.018 148.1)
-
Step 400
400
#94A697
oklch(70.7% 0.03 150.2)
-
Step 500
500
#7A907E
oklch(63.1% 0.037 150.5)
-
Step 600
600
#637A67
oklch(55.5% 0.04 150)
-
Step 700
700
#526755
oklch(49.1% 0.038 149)
-
Step 800
800 (this color)
#405143
oklch(41.6% 0.031 150)
-
Step 900
900
#39453B
oklch(37.6% 0.023 150)
-
Step 950
950
#212922
oklch(27.1% 0.017 148.6)
#405143 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) | #514E42 | 0.027 |
| Deuteranopia (no green cones) | #4E4C44 | 0.026 |
| Tritanopia (no blue cones) | #3E504D | 0.018 |
| Achromatopsia (no color) | #4D4D4D | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405143
#405143
oklch(41.6% 0.031 150)
- #564654
#564654
oklch(41.6% 0.031 330.3)
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 #405143, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.030
- Dark Blue Green #005249 ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.053
- Deep Teal #00555A ΔE 0.056
- Pine #2B5D34 ΔE 0.057
- Dark Green Blue #1F6357 ΔE 0.059
- Dark Teal #014D4E ΔE 0.060
- Charcoal #264653 ΔE 0.062
Use #405143 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.