#3C406A
Closest named color: Dark Grey Blue (#29465B). oklch(38.8% 0.071 278.4), rgb(60, 64, 106).
Aa
White text reads best on this color (9.84:1).
About this color
#3C406A is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.071 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.044 away. White text reads best on it, at 9.84:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.13:1 |
| White text | 9.84:1 |
Values
| HEX | #3C406A |
| RGB | rgb(60, 64, 106) |
| HSL | hsl(235, 28%, 33%) |
| OKLCH | oklch(38.8% 0.071 278.4) |
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 #3C406A | 9.84:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #3C406A | 2.13:1 | Fails | Lc 11.2 | Not readable |
| #3C406A text on white | 9.84:1 | AAA | Lc 92.8 | Preferred for body text |
| #3C406A text on black | 2.13:1 | Fails | Lc -9.7 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8ED
oklch(88.6% 0.029 277.2)
-
Step 300
300
#B8BEE3
oklch(80.9% 0.053 277.9)
-
Step 400
400
#949BD6
oklch(70.6% 0.087 278.7)
-
Step 500
500
#7B82CB
oklch(63.1% 0.11 278.6)
-
Step 600
600
#646AB7
oklch(55.5% 0.119 278.4)
-
Step 700
700
#53589E
oklch(49% 0.111 278.4)
-
Step 800
800
#444980
oklch(42.8% 0.091 277.9)
-
Step 900
900 (this color)
#3C406A
oklch(38.8% 0.071 278.4)
-
Step 950
950
#21243C
oklch(27% 0.045 277.5)
#3C406A 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) | #32456C | 0.019 |
| Deuteranopia (no green cones) | #2E4269 | 0.020 |
| Tritanopia (no blue cones) | #2E4850 | 0.061 |
| Achromatopsia (no color) | #434343 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C406A
#3C406A
oklch(38.8% 0.071 278.4)
- #4E450F
#4E450F
oklch(38.8% 0.072 99.5)
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 #3C406A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.044
- Twilight Blue #0A437A ΔE 0.054
- Charcoal #264653 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.061
- Light Navy #155084 ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.068
- Cobalt #1E488F ΔE 0.068
Use #3C406A 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.