#3C405B
Closest named color: Dark Grey Blue (#29465B). oklch(38% 0.046 277.4), rgb(60, 64, 91).
Aa
White text reads best on this color (10.11:1).
About this color
#3C405B is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.046 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.030 away. White text reads best on it, at 10.11:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #3C405B |
| RGB | rgb(60, 64, 91) |
| HSL | hsl(232, 21%, 30%) |
| OKLCH | oklch(38% 0.046 277.4) |
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 #3C405B | 10.11:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #3C405B | 2.07:1 | Fails | Lc 10.5 | Not readable |
| #3C405B text on white | 10.11:1 | AAA | Lc 93.5 | Preferred for body text |
| #3C405B text on black | 2.07:1 | Fails | Lc -9.0 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BBBFD8
oklch(80.9% 0.035 278.4)
-
Step 400
400
#989EC4
oklch(70.8% 0.056 277.8)
-
Step 500
500
#7F86B5
oklch(63.2% 0.071 277.6)
-
Step 600
600
#686FA1
oklch(55.6% 0.078 277.4)
-
Step 700
700
#575D89
oklch(49.2% 0.071 277.5)
-
Step 800
800
#474C70
oklch(42.8% 0.06 277.5)
-
Step 900
900 (this color)
#3C405B
oklch(38% 0.046 277.4)
-
Step 950
950
#232535
oklch(27% 0.03 278.7)
#3C405B 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) | #38435C | 0.010 |
| Deuteranopia (no green cones) | #36415A | 0.010 |
| Tritanopia (no blue cones) | #344549 | 0.042 |
| Achromatopsia (no color) | #424242 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C405B
#3C405B
oklch(38% 0.046 277.4)
- #494325
#494325
oklch(38.1% 0.047 98.3)
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 #3C405B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.030
- Charcoal #264653 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.045
- Onyx #343A40 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.060
- Dark Slate Gray #2F4F4F ΔE 0.060
- Gunmetal #293241 ΔE 0.067
Use #3C405B 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.