#3B4E4B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.7% 0.024 184.4), rgb(59, 78, 75).
Aa
White text reads best on this color (8.83:1).
About this color
#3B4E4B is a dark close to neutral grey. In OKLCH its lightness is 41%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.015 away. White text reads best on it, at 8.83:1.
| Hue family | Neutrals |
| Lightness | dark (41%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.37:1 |
| White text | 8.83:1 |
Values
| HEX | #3B4E4B |
| RGB | rgb(59, 78, 75) |
| HSL | hsl(171, 14%, 27%) |
| OKLCH | oklch(40.7% 0.024 184.4) |
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 #3B4E4B | 8.83:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #3B4E4B | 2.37:1 | Fails | Lc 13.8 | Not readable |
| #3B4E4B text on white | 8.83:1 | AAA | Lc 90.2 | Preferred for body text |
| #3B4E4B text on black | 2.37:1 | Fails | Lc -12.1 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D4DBDA
oklch(88.6% 0.008 186.9)
-
Step 300
300
#B7C4C2
oklch(81% 0.015 185.9)
-
Step 400
400
#92A5A2
oklch(70.6% 0.022 185.2)
-
Step 500
500
#778F8B
oklch(63% 0.028 184.2)
-
Step 600
600
#5F7A75
oklch(55.7% 0.032 182.5)
-
Step 700
700
#4E6663
oklch(49% 0.029 186.8)
-
Step 800
800 (this color)
#3B4E4B
oklch(40.7% 0.024 184.4)
-
Step 900
900
#374543
oklch(37.7% 0.018 185.8)
-
Step 950
950
#202827
oklch(26.9% 0.011 187.3)
#3B4E4B 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) | #4C4C4B | 0.026 |
| Deuteranopia (no green cones) | #48494B | 0.024 |
| Tritanopia (no blue cones) | #364F4D | 0.007 |
| Achromatopsia (no color) | #4A4A4A | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4E4B
#3B4E4B
oklch(40.7% 0.024 184.4)
- #554448
#554448
oklch(40.6% 0.024 2.4)
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 #3B4E4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.015
- Charcoal Grey #3C4142 ΔE 0.040
- Charcoal #264653 ΔE 0.044
- Deep Teal #00555A ΔE 0.047
- Dark Blue Green #005249 ΔE 0.048
- Dark Teal #014D4E ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.049
- Onyx #343A40 ΔE 0.065
Use #3B4E4B 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.