#344B66
Closest named color: Dark Grey Blue (#29465B). oklch(40.6% 0.054 253), rgb(52, 75, 102).
Aa
White text reads best on this color (8.95:1).
About this color
#344B66 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.054 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 8.95:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #344B66 |
| RGB | rgb(52, 75, 102) |
| HSL | hsl(212, 32%, 30%) |
| OKLCH | oklch(40.6% 0.054 253) |
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 #344B66 | 8.95:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #344B66 | 2.34:1 | Fails | Lc 13.5 | Not readable |
| #344B66 text on white | 8.95:1 | AAA | Lc 90.5 | Preferred for body text |
| #344B66 text on black | 2.34:1 | Fails | Lc -11.8 | 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
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D1DAE5
oklch(88.5% 0.018 253.4)
-
Step 300
300
#B3C2D5
oklch(80.9% 0.032 254.3)
-
Step 400
400
#8BA3C0
oklch(70.7% 0.05 253.3)
-
Step 500
500
#6E8CB0
oklch(63.1% 0.064 253.3)
-
Step 600
600
#56769C
oklch(55.7% 0.07 253.2)
-
Step 700
700
#466385
oklch(49.1% 0.065 253)
-
Step 800
800 (this color)
#344B66
oklch(40.6% 0.054 253)
-
Step 900
900
#324358
oklch(37.7% 0.042 254.1)
-
Step 950
950
#1D2733
oklch(26.9% 0.027 253.3)
#344B66 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) | #414C67 | 0.019 |
| Deuteranopia (no green cones) | #3A4765 | 0.014 |
| Tritanopia (no blue cones) | #1F5154 | 0.047 |
| Achromatopsia (no color) | #494949 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #344B66
#344B66
oklch(40.6% 0.054 253)
- #5B4527
#5B4527
oklch(40.7% 0.054 73.9)
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 #344B66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Charcoal #264653 ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.046
- Light Navy #155084 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.055
- Deep Teal #00555A ΔE 0.055
- Twilight Blue #0A437A ΔE 0.060
Use #344B66 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.