#3D435B
Closest named color: Dark Grey Blue (#29465B). oklch(38.8% 0.042 273.5), rgb(61, 67, 91).
Aa
White text reads best on this color (9.75:1).
About this color
#3D435B is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.042 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 9.75:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.15:1 |
| White text | 9.75:1 |
Values
| HEX | #3D435B |
| RGB | rgb(61, 67, 91) |
| HSL | hsl(228, 20%, 30%) |
| OKLCH | oklch(38.8% 0.042 273.5) |
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 #3D435B | 9.75:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #3D435B | 2.15:1 | Fails | Lc 11.3 | Not readable |
| #3D435B text on white | 9.75:1 | AAA | Lc 92.6 | Preferred for body text |
| #3D435B text on black | 2.15:1 | Fails | Lc -9.8 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#BAC0D5
oklch(81% 0.03 273)
-
Step 400
400
#969FC0
oklch(70.7% 0.049 273.1)
-
Step 500
500
#7D87B1
oklch(63.1% 0.064 274)
-
Step 600
600
#66719C
oklch(55.7% 0.068 273)
-
Step 700
700
#555E86
oklch(49.1% 0.065 274)
-
Step 800
800
#454D6D
oklch(42.7% 0.054 273.1)
-
Step 900
900 (this color)
#3D435B
oklch(38.8% 0.042 273.5)
-
Step 950
950
#222634
oklch(27.1% 0.027 272.1)
#3D435B 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) | #3C455C | 0.006 |
| Deuteranopia (no green cones) | #39435A | 0.006 |
| Tritanopia (no blue cones) | #35484B | 0.038 |
| Achromatopsia (no color) | #444444 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D435B
#3D435B
oklch(38.8% 0.042 273.5)
- #4C442A
#4C442A
oklch(38.8% 0.042 93)
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 #3D435B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Charcoal #264653 ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.042
- Onyx #343A40 ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.067
- Dark Teal #014D4E ΔE 0.069
Use #3D435B 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.