#334F4B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.4% 0.034 184.8), rgb(51, 79, 75).
Aa
White text reads best on this color (8.89:1).
About this color
#334F4B is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.034 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.008 away. White text reads best on it, at 8.89:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.36:1 |
| White text | 8.89:1 |
Values
| HEX | #334F4B |
| RGB | rgb(51, 79, 75) |
| HSL | hsl(171, 22%, 25%) |
| OKLCH | oklch(40.4% 0.034 184.8) |
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 #334F4B | 8.89:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #334F4B | 2.36:1 | Fails | Lc 13.6 | Not readable |
| #334F4B text on white | 8.89:1 | AAA | Lc 90.3 | Preferred for body text |
| #334F4B text on black | 2.36:1 | Fails | Lc -12.0 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D1DCDA
oklch(88.6% 0.012 184)
-
Step 300
300
#B3C5C2
oklch(80.9% 0.02 184.8)
-
Step 400
400
#8BA7A3
oklch(70.6% 0.032 185.9)
-
Step 500
500
#6E928C
oklch(63.1% 0.041 183.6)
-
Step 600
600
#557C76
oklch(55.5% 0.045 184.1)
-
Step 700
700
#456964
oklch(49.2% 0.042 185)
-
Step 800
800 (this color)
#334F4B
oklch(40.4% 0.034 184.8)
-
Step 900
900
#314643
oklch(37.6% 0.027 185.2)
-
Step 950
950
#1D2927
oklch(26.9% 0.017 183.7)
#334F4B 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 | 0.036 |
| Deuteranopia (no green cones) | #47484B | 0.035 |
| Tritanopia (no blue cones) | #2A504E | 0.010 |
| Achromatopsia (no color) | #4A4A4A | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334F4B
#334F4B
oklch(40.4% 0.034 184.8)
- #594146
#594146
oklch(40.3% 0.034 4.9)
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 #334F4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.008
- Dark Blue Green #005249 ΔE 0.037
- Deep Teal #00555A ΔE 0.038
- Dark Teal #014D4E ΔE 0.039
- Charcoal #264653 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.062
Use #334F4B 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.