#3D554F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.8% 0.031 177.6), rgb(61, 85, 79).
Aa
White text reads best on this color (8.04:1).
About this color
#3D554F is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.031 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.028 away. White text reads best on it, at 8.04:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.61:1 |
| White text | 8.04:1 |
Values
| HEX | #3D554F |
| RGB | rgb(61, 85, 79) |
| HSL | hsl(165, 16%, 29%) |
| OKLCH | oklch(42.8% 0.031 177.6) |
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 #3D554F | 8.04:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #3D554F | 2.61:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #3D554F text on white | 8.04:1 | AAA | Lc 87.8 | Fine for body text |
| #3D554F text on black | 2.61:1 | Fails | Lc -14.3 | 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
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D3DBD9
oklch(88.5% 0.009 179.6)
-
Step 300
300
#B5C5C0
oklch(81% 0.019 175.2)
-
Step 400
400
#8EA7A0
oklch(70.7% 0.03 176.7)
-
Step 500
500
#729189
oklch(63.1% 0.037 177.5)
-
Step 600
600
#5A7B73
oklch(55.5% 0.04 178.1)
-
Step 700
700
#4A6860
oklch(49.1% 0.037 176.4)
-
Step 800
800 (this color)
#3D554F
oklch(42.8% 0.031 177.6)
-
Step 900
900
#344641
oklch(37.7% 0.024 176)
-
Step 950
950
#1F2926
oklch(27% 0.015 174.9)
#3D554F 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) | #53524F | 0.033 |
| Deuteranopia (no green cones) | #4F4F4F | 0.031 |
| Tritanopia (no blue cones) | #375653 | 0.009 |
| Achromatopsia (no color) | #505050 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D554F
#3D554F
oklch(42.8% 0.031 177.6)
- #5E484F
#5E484F
oklch(42.7% 0.032 357.6)
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 #3D554F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.028
- Dark Green Blue #1F6357 ΔE 0.047
- Deep Teal #00555A ΔE 0.047
- Dark Blue Green #005249 ΔE 0.052
- Petrol #005F6A ΔE 0.055
- Dark Teal #014D4E ΔE 0.059
- Pine #2B5D34 ΔE 0.061
- Charcoal #264653 ΔE 0.062
Use #3D554F 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.