#334C45
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.4% 0.033 175.2), rgb(51, 76, 69).
Aa
White text reads best on this color (9.29:1).
About this color
#334C45 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.033 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.016 away. White text reads best on it, at 9.29:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.26:1 |
| White text | 9.29:1 |
Values
| HEX | #334C45 |
| RGB | rgb(51, 76, 69) |
| HSL | hsl(163, 20%, 25%) |
| OKLCH | oklch(39.4% 0.033 175.2) |
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 #334C45 | 9.29:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #334C45 | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #334C45 text on white | 9.29:1 | AAA | Lc 91.4 | Preferred for body text |
| #334C45 text on black | 2.26:1 | Fails | Lc -11.0 | 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 900.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBE9
oklch(93.5% 0.007 174.4)
-
Step 200
200
#D0DCD8
oklch(88.4% 0.014 174.1)
-
Step 300
300
#B1C6C0
oklch(80.9% 0.024 176.7)
-
Step 400
400
#88A99F
oklch(70.7% 0.039 174.7)
-
Step 500
500
#699488
oklch(63.2% 0.05 175.4)
-
Step 600
600
#507E72
oklch(55.6% 0.054 175.9)
-
Step 700
700
#406A5F
oklch(49% 0.051 175.6)
-
Step 800
800
#35574E
oklch(42.8% 0.043 175.6)
-
Step 900
900 (this color)
#334C45
oklch(39.4% 0.033 175.2)
-
Step 950
950
#1C2A26
oklch(27.1% 0.02 175.1)
#334C45 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) | #4A4945 | 0.034 |
| Deuteranopia (no green cones) | #464645 | 0.032 |
| Tritanopia (no blue cones) | #2C4D4A | 0.010 |
| Achromatopsia (no color) | #474747 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334C45
#334C45
oklch(39.4% 0.033 175.2)
- #553F47
#553F47
oklch(39.4% 0.033 355)
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 #334C45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.016
- Charcoal Grey #3C4142 ΔE 0.036
- Dark Blue Green #005249 ΔE 0.038
- Dark Teal #014D4E ΔE 0.038
- Charcoal #264653 ΔE 0.039
- Deep Teal #00555A ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.049
- Onyx #343A40 ΔE 0.058
Use #334C45 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.