#334C4B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.6% 0.031 192.8), rgb(51, 76, 75).
Aa
White text reads best on this color (9.22:1).
About this color
#334C4B is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.031 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.010 away. White text reads best on it, at 9.22:1.
| 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 | 9.22:1 |
Values
| HEX | #334C4B |
| RGB | rgb(51, 76, 75) |
| HSL | hsl(178, 20%, 25%) |
| OKLCH | oklch(39.6% 0.031 192.8) |
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 #334C4B | 9.22:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #334C4B | 2.27:1 | Fails | Lc 12.7 | Not readable |
| #334C4B text on white | 9.22:1 | AAA | Lc 91.2 | Preferred for body text |
| #334C4B 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
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D0DCDB
oklch(88.5% 0.013 190.9)
-
Step 300
300
#B1C6C4
oklch(81% 0.023 189.8)
-
Step 400
400
#87A8A7
oklch(70.7% 0.036 194.1)
-
Step 500
500
#689391
oklch(63.1% 0.047 192.4)
-
Step 600
600
#4F7D7B
oklch(55.6% 0.05 192.3)
-
Step 700
700
#3F6968
oklch(49% 0.047 193.8)
-
Step 800
800
#345655
oklch(42.7% 0.04 193.4)
-
Step 900
900 (this color)
#334C4B
oklch(39.6% 0.031 192.8)
-
Step 950
950
#1B2A29
oklch(27.1% 0.02 190.8)
#334C4B 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) | #494A4B | 0.032 |
| Deuteranopia (no green cones) | #44464B | 0.030 |
| Tritanopia (no blue cones) | #2A4D4C | 0.010 |
| Achromatopsia (no color) | #474747 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334C4B
#334C4B
oklch(39.6% 0.031 192.8)
- #564042
#564042
oklch(39.6% 0.031 12.5)
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 #334C4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.010
- Charcoal #264653 ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.035
- Dark Teal #014D4E ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.041
- Dark Blue Green #005249 ΔE 0.041
- Deep Teal #00555A ΔE 0.042
- Onyx #343A40 ΔE 0.057
Use #334C4B 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.