#3C4664
Closest named color: Dark Grey Blue (#29465B). oklch(39.9% 0.053 269.8), rgb(60, 70, 100).
Aa
White text reads best on this color (9.32:1).
About this color
#3C4664 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.053 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 9.32:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.25:1 |
| White text | 9.32:1 |
Values
| HEX | #3C4664 |
| RGB | rgb(60, 70, 100) |
| HSL | hsl(225, 25%, 31%) |
| OKLCH | oklch(39.9% 0.053 269.8) |
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 #3C4664 | 9.32:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #3C4664 | 2.25:1 | Fails | Lc 12.5 | Not readable |
| #3C4664 text on white | 9.32:1 | AAA | Lc 91.5 | Preferred for body text |
| #3C4664 text on black | 2.25:1 | Fails | Lc -10.9 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D3D9E8
oklch(88.5% 0.022 268.4)
-
Step 300
300
#B6C0DB
oklch(80.9% 0.04 269.4)
-
Step 400
400
#919FC9
oklch(70.7% 0.064 270.4)
-
Step 500
500
#7687BB
oklch(63% 0.081 270)
-
Step 600
600
#5F71A7
oklch(55.7% 0.087 269.4)
-
Step 700
700
#4E5E8F
oklch(49% 0.081 269.5)
-
Step 800
800
#404D74
oklch(42.7% 0.067 269.4)
-
Step 900
900 (this color)
#3C4664
oklch(39.9% 0.053 269.8)
-
Step 950
950
#202637
oklch(27.1% 0.033 269.2)
#3C4664 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) | #3C4965 | 0.009 |
| Deuteranopia (no green cones) | #394563 | 0.006 |
| Tritanopia (no blue cones) | #304C51 | 0.046 |
| Achromatopsia (no color) | #474747 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C4664
#3C4664
oklch(39.9% 0.053 269.8)
- #524624
#524624
oklch(39.8% 0.053 90.5)
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 #3C4664, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Charcoal #264653 ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.063
- Light Navy #155084 ΔE 0.063
- YInMn Blue #415A77 ΔE 0.064
- Dark Blue Grey #1F3B4D ΔE 0.066
Use #3C4664 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.