#334F65
Closest named color: Dark Grey Blue (#29465B). oklch(41.5% 0.05 243.1), rgb(51, 79, 101).
Aa
White text reads best on this color (8.58:1).
About this color
#334F65 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.050 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.034 away. White text reads best on it, at 8.58:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.44:1 |
| White text | 8.58:1 |
Values
| HEX | #334F65 |
| RGB | rgb(51, 79, 101) |
| HSL | hsl(206, 33%, 30%) |
| OKLCH | oklch(41.5% 0.05 243.1) |
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 #334F65 | 8.58:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #334F65 | 2.44:1 | Fails | Lc 14.6 | Not readable |
| #334F65 text on white | 8.58:1 | AAA | Lc 89.4 | Fine for body text |
| #334F65 text on black | 2.44:1 | Fails | Lc -12.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C3D2
oklch(80.8% 0.029 243.2)
-
Step 400
400
#88A5BC
oklch(70.8% 0.047 242.3)
-
Step 500
500
#6A8EAB
oklch(63.1% 0.059 243.2)
-
Step 600
600
#517897
oklch(55.6% 0.065 243.3)
-
Step 700
700
#416581
oklch(49.1% 0.061 242.9)
-
Step 800
800 (this color)
#334F65
oklch(41.5% 0.05 243.1)
-
Step 900
900
#2F4455
oklch(37.6% 0.039 243.5)
-
Step 950
950
#1C2832
oklch(27% 0.025 244)
#334F65 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) | #464F66 | 0.026 |
| Deuteranopia (no green cones) | #3F4A65 | 0.021 |
| Tritanopia (no blue cones) | #1D5456 | 0.041 |
| Achromatopsia (no color) | #4C4C4C | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334F65
#334F65
oklch(41.5% 0.05 243.1)
- #5F462F
#5F462F
oklch(41.5% 0.049 63.4)
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 #334F65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.039
- Charcoal #264653 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.046
- Deep Teal #00555A ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.054
- Petrol #005F6A ΔE 0.054
- Light Navy #155084 ΔE 0.056
Use #334F65 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.