#3D445A
Closest named color: Dark Grey Blue (#29465B). oklch(39% 0.039 270.8), rgb(61, 68, 90).
Aa
White text reads best on this color (9.66:1).
About this color
#3D445A is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.039 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.027 away. White text reads best on it, at 9.66:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.17:1 |
| White text | 9.66:1 |
Values
| HEX | #3D445A |
| RGB | rgb(61, 68, 90) |
| HSL | hsl(226, 19%, 30%) |
| OKLCH | oklch(39% 0.039 270.8) |
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 #3D445A | 9.66:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #3D445A | 2.17:1 | Fails | Lc 11.6 | Not readable |
| #3D445A text on white | 9.66:1 | AAA | Lc 92.4 | Preferred for body text |
| #3D445A text on black | 2.17:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAF0
oklch(93.7% 0.008 271.3)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#B9C0D4
oklch(80.9% 0.029 270.3)
-
Step 400
400
#96A0BE
oklch(70.8% 0.045 270.7)
-
Step 500
500
#7C88AE
oklch(63.1% 0.059 271)
-
Step 600
600
#65729A
oklch(55.7% 0.064 270.3)
-
Step 700
700
#545F83
oklch(49.1% 0.06 271)
-
Step 800
800
#454E6B
oklch(42.8% 0.05 270.9)
-
Step 900
900 (this color)
#3D445A
oklch(39% 0.039 270.8)
-
Step 950
950
#222633
oklch(27.1% 0.025 271.4)
#3D445A 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) | #3D465B | 0.006 |
| Deuteranopia (no green cones) | #3B4359 | 0.005 |
| Tritanopia (no blue cones) | #35484B | 0.035 |
| Achromatopsia (no color) | #444444 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D445A
#3D445A
oklch(39% 0.039 270.8)
- #4D442D
#4D442D
oklch(38.9% 0.038 89.1)
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 #3D445A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.027
- Charcoal #264653 ΔE 0.035
- Charcoal Grey #3C4142 ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.048
- Onyx #343A40 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.057
- Dark Teal #014D4E ΔE 0.066
- Deep Teal #00555A ΔE 0.069
Use #3D445A 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.