#3D406F
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.079 279.3), rgb(61, 64, 111).
Aa
White text reads best on this color (9.71:1).
About this color
#3D406F is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.079 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.051 away. White text reads best on it, at 9.71:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #3D406F |
| RGB | rgb(61, 64, 111) |
| HSL | hsl(236, 29%, 34%) |
| OKLCH | oklch(39.2% 0.079 279.3) |
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 #3D406F | 9.71:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #3D406F | 2.16:1 | Fails | Lc 11.5 | Not readable |
| #3D406F text on white | 9.71:1 | AAA | Lc 92.4 | Preferred for body text |
| #3D406F text on black | 2.16:1 | Fails | Lc -10.0 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7EF
oklch(88.4% 0.033 280)
-
Step 300
300
#B8BDE7
oklch(80.9% 0.059 279.7)
-
Step 400
400
#949ADB
oklch(70.6% 0.095 279.6)
-
Step 500
500
#7B80D1
oklch(63.1% 0.121 279.6)
-
Step 600
600
#6468BE
oklch(55.5% 0.132 279.2)
-
Step 700
700
#5456A4
oklch(49% 0.123 279.8)
-
Step 800
800
#444785
oklch(42.7% 0.101 279.1)
-
Step 900
900 (this color)
#3D406F
oklch(39.2% 0.079 279.3)
-
Step 950
950
#21233E
oklch(26.8% 0.05 279.2)
#3D406F 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) | #2F4671 | 0.024 |
| Deuteranopia (no green cones) | #2C426E | 0.024 |
| Tritanopia (no blue cones) | #2D4952 | 0.068 |
| Achromatopsia (no color) | #444444 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D406F
#3D406F
oklch(39.2% 0.079 279.3)
- #504604
#504604
oklch(39.2% 0.079 99.6)
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 #3D406F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.052
- Twilight Blue #0A437A ΔE 0.053
- Light Navy #155084 ΔE 0.061
- Cobalt #1E488F ΔE 0.062
- Charcoal #264653 ΔE 0.065
- Blueberry #464196 ΔE 0.067
- Dusk Blue #26538D ΔE 0.068
Use #3D406F 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.