#334B45
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.1% 0.031 177.3), rgb(51, 75, 69).
Aa
White text reads best on this color (9.40:1).
About this color
#334B45 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.031 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.017 away. White text reads best on it, at 9.40:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.23:1 |
| White text | 9.40:1 |
Values
| HEX | #334B45 |
| RGB | rgb(51, 75, 69) |
| HSL | hsl(165, 19%, 25%) |
| OKLCH | oklch(39.1% 0.031 177.3) |
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 #334B45 | 9.40:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #334B45 | 2.23:1 | Fails | Lc 12.2 | Not readable |
| #334B45 text on white | 9.40:1 | AAA | Lc 91.7 | Preferred for body text |
| #334B45 text on black | 2.23:1 | Fails | Lc -10.7 | 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
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D1DCD9
oklch(88.5% 0.013 178)
-
Step 300
300
#B1C6C0
oklch(80.9% 0.024 176.7)
-
Step 400
400
#88A9A0
oklch(70.7% 0.039 176.7)
-
Step 500
500
#6A9389
oklch(63% 0.048 177.9)
-
Step 600
600
#517E73
oklch(55.7% 0.053 177.1)
-
Step 700
700
#416A60
oklch(49.1% 0.049 177)
-
Step 800
800
#36564F
oklch(42.6% 0.04 179)
-
Step 900
900 (this color)
#334B45
oklch(39.1% 0.031 177.3)
-
Step 950
950
#1C2A26
oklch(27.1% 0.02 175.1)
#334B45 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) | #494845 | 0.033 |
| Deuteranopia (no green cones) | #454545 | 0.031 |
| Tritanopia (no blue cones) | #2C4C49 | 0.010 |
| Achromatopsia (no color) | #464646 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334B45
#334B45
oklch(39.1% 0.031 177.3)
- #543E45
#543E45
oklch(39% 0.033 357.8)
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 #334B45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.017
- Charcoal Grey #3C4142 ΔE 0.033
- Charcoal #264653 ΔE 0.037
- Dark Teal #014D4E ΔE 0.038
- Dark Blue Green #005249 ΔE 0.039
- Deep Teal #00555A ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.047
- Onyx #343A40 ΔE 0.055
Use #334B45 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.