#3D455E
Closest named color: Dark Grey Blue (#29465B). oklch(39.4% 0.044 270.6), rgb(61, 69, 94).
Aa
White text reads best on this color (9.49:1).
About this color
#3D455E is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.044 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 9.49:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.21:1 |
| White text | 9.49:1 |
Values
| HEX | #3D455E |
| RGB | rgb(61, 69, 94) |
| HSL | hsl(225, 21%, 30%) |
| OKLCH | oklch(39.4% 0.044 270.6) |
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 #3D455E | 9.49:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #3D455E | 2.21:1 | Fails | Lc 12.0 | Not readable |
| #3D455E text on white | 9.49:1 | AAA | Lc 92.0 | Preferred for body text |
| #3D455E text on black | 2.21:1 | Fails | Lc -10.4 | 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
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B8C0D7
oklch(80.9% 0.034 270.4)
-
Step 400
400
#949FC2
oklch(70.6% 0.053 271.3)
-
Step 500
500
#7A88B3
oklch(63.2% 0.067 270.4)
-
Step 600
600
#63719F
oklch(55.6% 0.074 270.9)
-
Step 700
700
#525F88
oklch(49.2% 0.068 270.3)
-
Step 800
800
#434D6E
oklch(42.6% 0.057 270.9)
-
Step 900
900 (this color)
#3D455E
oklch(39.4% 0.044 270.6)
-
Step 950
950
#212634
oklch(27% 0.027 269.3)
#3D455E 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) | #3D475F | 0.006 |
| Deuteranopia (no green cones) | #3A445D | 0.006 |
| Tritanopia (no blue cones) | #344A4E | 0.039 |
| Achromatopsia (no color) | #464646 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D455E
#3D455E
oklch(39.4% 0.044 270.6)
- #4F452A
#4F452A
oklch(39.3% 0.044 89.9)
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 #3D455E, 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 0.038
- Charcoal Grey #3C4142 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.051
- Onyx #343A40 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.061
- Dark Teal #014D4E ΔE 0.069
- YInMn Blue #415A77 ΔE 0.069
Use #3D455E 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.