#3D4063
Closest named color: Dark Grey Blue (#29465B). oklch(38.5% 0.06 279.4), rgb(61, 64, 99).
Aa
White text reads best on this color (9.94:1).
About this color
#3D4063 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.060 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.037 away. White text reads best on it, at 9.94:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.11:1 |
| White text | 9.94:1 |
Values
| HEX | #3D4063 |
| RGB | rgb(61, 64, 99) |
| HSL | hsl(235, 24%, 31%) |
| OKLCH | oklch(38.5% 0.06 279.4) |
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 #3D4063 | 9.94:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #3D4063 | 2.11:1 | Fails | Lc 10.9 | Not readable |
| #3D4063 text on white | 9.94:1 | AAA | Lc 93.0 | Preferred for body text |
| #3D4063 text on black | 2.11:1 | Fails | Lc -9.4 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D5D8EA
oklch(88.5% 0.025 278.3)
-
Step 300
300
#BABEDE
oklch(80.9% 0.045 279.7)
-
Step 400
400
#979CCD
oklch(70.6% 0.072 279.9)
-
Step 500
500
#7E83C0
oklch(63% 0.092 279.8)
-
Step 600
600
#686CAC
oklch(55.6% 0.099 279.9)
-
Step 700
700
#565A94
oklch(49.1% 0.092 279.4)
-
Step 800
800
#464A78
oklch(42.7% 0.076 278.9)
-
Step 900
900 (this color)
#3D4063
oklch(38.5% 0.06 279.4)
-
Step 950
950
#232439
oklch(27% 0.039 281.4)
#3D4063 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) | #354464 | 0.016 |
| Deuteranopia (no green cones) | #334162 | 0.015 |
| Tritanopia (no blue cones) | #32474D | 0.053 |
| Achromatopsia (no color) | #434343 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4063
#3D4063
oklch(38.5% 0.06 279.4)
- #4B441C
#4B441C
oklch(38.4% 0.059 99.5)
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 #3D4063, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.037
- Charcoal #264653 ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.060
- Twilight Blue #0A437A ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.063
- Onyx #343A40 ΔE 0.063
- Dark Slate Gray #2F4F4F ΔE 0.069
Use #3D4063 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.