#3A554F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.6% 0.034 179.2), rgb(58, 85, 79).
Aa
White text reads best on this color (8.10:1).
About this color
#3A554F is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.034 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.025 away. White text reads best on it, at 8.10:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.59:1 |
| White text | 8.10:1 |
Values
| HEX | #3A554F |
| RGB | rgb(58, 85, 79) |
| HSL | hsl(167, 19%, 28%) |
| OKLCH | oklch(42.6% 0.034 179.2) |
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 #3A554F | 8.10:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #3A554F | 2.59:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #3A554F text on white | 8.10:1 | AAA | Lc 88.0 | Fine for body text |
| #3A554F text on black | 2.59:1 | Fails | Lc -14.1 | 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
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DCD9
oklch(88.6% 0.012 176.3)
-
Step 300
300
#B4C5C1
oklch(80.9% 0.019 180.1)
-
Step 400
400
#8CA7A1
oklch(70.6% 0.031 180.4)
-
Step 500
500
#6F928A
oklch(63.1% 0.041 179.3)
-
Step 600
600
#577C74
oklch(55.6% 0.044 179.7)
-
Step 700
700
#476961
oklch(49.2% 0.041 178.2)
-
Step 800
800 (this color)
#3A554F
oklch(42.6% 0.034 179.2)
-
Step 900
900
#324642
oklch(37.6% 0.026 181.1)
-
Step 950
950
#1E2927
oklch(27% 0.016 182.8)
#3A554F 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 | 0.036 |
| Deuteranopia (no green cones) | #4E4E4F | 0.035 |
| Tritanopia (no blue cones) | #325653 | 0.010 |
| Achromatopsia (no color) | #505050 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A554F
#3A554F
oklch(42.6% 0.034 179.2)
- #5F474E
#5F474E
oklch(42.6% 0.034 359.4)
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 #3A554F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.025
- Deep Teal #00555A ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.046
- Dark Blue Green #005249 ΔE 0.049
- Petrol #005F6A ΔE 0.053
- Dark Teal #014D4E ΔE 0.056
- Charcoal #264653 ΔE 0.060
- Pine #2B5D34 ΔE 0.060
Use #3A554F 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.