#334665
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.058 259.9), rgb(51, 70, 101).
Aa
White text reads best on this color (9.52:1).
About this color
#334665 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.058 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 9.52:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.20:1 |
| White text | 9.52:1 |
Values
| HEX | #334665 |
| RGB | rgb(51, 70, 101) |
| HSL | hsl(217, 33%, 30%) |
| OKLCH | oklch(39.2% 0.058 259.9) |
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 #334665 | 9.52:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #334665 | 2.20:1 | Fails | Lc 12.0 | Not readable |
| #334665 text on white | 9.52:1 | AAA | Lc 92.0 | Preferred for body text |
| #334665 text on black | 2.20:1 | Fails | Lc -10.4 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEA
oklch(88.6% 0.025 259.8)
-
Step 300
300
#B0C2DD
oklch(80.9% 0.043 258.4)
-
Step 400
400
#87A2CD
oklch(70.8% 0.07 259.6)
-
Step 500
500
#698AC0
oklch(63.1% 0.09 260)
-
Step 600
600
#5173AC
oklch(55.5% 0.098 260.3)
-
Step 700
700
#426194
oklch(49.2% 0.09 260)
-
Step 800
800
#364F78
oklch(42.7% 0.075 259.9)
-
Step 900
900 (this color)
#334665
oklch(39.2% 0.058 259.9)
-
Step 950
950
#1C2739
oklch(27.1% 0.037 260)
#334665 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) | #3A4866 | 0.012 |
| Deuteranopia (no green cones) | #354364 | 0.009 |
| Tritanopia (no blue cones) | #1F4D51 | 0.052 |
| Achromatopsia (no color) | #454545 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334665
#334665
oklch(39.2% 0.058 259.9)
- #56421F
#56421F
oklch(39.2% 0.058 79.8)
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 #334665, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.037
- Twilight Blue #0A437A ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.055
- Light Navy #155084 ΔE 0.057
- Charcoal Grey #3C4142 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.061
Use #334665 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.