#334C49
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.5% 0.031 186.7), rgb(51, 76, 73).
Aa
White text reads best on this color (9.24:1).
About this color
#334C49 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.031 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.012 away. White text reads best on it, at 9.24:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.27:1 |
| White text | 9.24:1 |
Values
| HEX | #334C49 |
| RGB | rgb(51, 76, 73) |
| HSL | hsl(173, 20%, 25%) |
| OKLCH | oklch(39.5% 0.031 186.7) |
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 #334C49 | 9.24:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #334C49 | 2.27:1 | Fails | Lc 12.7 | Not readable |
| #334C49 text on white | 9.24:1 | AAA | Lc 91.3 | Preferred for body text |
| #334C49 text on black | 2.27:1 | Fails | Lc -11.1 | 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 900.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D0DCDA
oklch(88.5% 0.013 185.1)
-
Step 300
300
#B1C6C3
oklch(81% 0.023 186.4)
-
Step 400
400
#87A9A4
oklch(70.8% 0.038 185.4)
-
Step 500
500
#68938E
oklch(63% 0.048 187)
-
Step 600
600
#4F7D78
oklch(55.5% 0.051 187.1)
-
Step 700
700
#3F6A65
oklch(49.1% 0.049 186.3)
-
Step 800
800
#355652
oklch(42.6% 0.039 186.2)
-
Step 900
900 (this color)
#334C49
oklch(39.5% 0.031 186.7)
-
Step 950
950
#1B2A28
oklch(27.1% 0.021 185.7)
#334C49 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) | #494949 | 0.033 |
| Deuteranopia (no green cones) | #454649 | 0.031 |
| Tritanopia (no blue cones) | #2B4D4B | 0.009 |
| Achromatopsia (no color) | #474747 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334C49
#334C49
oklch(39.5% 0.031 186.7)
- #554044
#554044
oklch(39.6% 0.03 5.8)
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 #334C49, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.012
- Charcoal #264653 ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.035
- Dark Teal #014D4E ΔE 0.037
- Dark Blue Green #005249 ΔE 0.040
- Deep Teal #00555A ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.043
- Onyx #343A40 ΔE 0.057
Use #334C49 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.