#3D4354
Closest named color: Dark Grey Blue (#29465B). oklch(38.4% 0.03 269.7), rgb(61, 67, 84).
Aa
White text reads best on this color (9.86:1).
About this color
#3D4354 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.030 and its hue 270°. 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 9.86:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.12:1 |
| White text | 9.86:1 |
Values
| HEX | #3D4354 |
| RGB | rgb(61, 67, 84) |
| HSL | hsl(224, 16%, 28%) |
| OKLCH | oklch(38.4% 0.03 269.7) |
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 #3D4354 | 9.86:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #3D4354 | 2.12:1 | Fails | Lc 11.1 | Not readable |
| #3D4354 text on white | 9.86:1 | AAA | Lc 92.9 | Preferred for body text |
| #3D4354 text on black | 2.12:1 | Fails | Lc -9.6 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BBC0D0
oklch(80.9% 0.023 272)
-
Step 400
400
#97A0B8
oklch(70.7% 0.037 269.2)
-
Step 500
500
#7E89A6
oklch(63.1% 0.046 268.8)
-
Step 600
600
#677291
oklch(55.5% 0.05 269.5)
-
Step 700
700
#56607C
oklch(49.2% 0.047 269.4)
-
Step 800
800
#464E65
oklch(42.6% 0.04 269.7)
-
Step 900
900 (this color)
#3D4354
oklch(38.4% 0.03 269.7)
-
Step 950
950
#232630
oklch(27% 0.019 272)
#3D4354 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) | #3E4455 | 0.004 |
| Deuteranopia (no green cones) | #3C4254 | 0.004 |
| Tritanopia (no blue cones) | #374649 | 0.026 |
| Achromatopsia (no color) | #434343 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4354
#3D4354
oklch(38.4% 0.03 269.7)
- #4A4331
#4A4331
oklch(38.5% 0.03 89.3)
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 #3D4354, 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 Grey #3C4142 ΔE 0.030
- Charcoal #264653 ΔE 0.032
- Onyx #343A40 ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.052
- Dark Teal #014D4E ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.069
Use #3D4354 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.