#3A446C
Closest named color: Dark Grey Blue (#29465B). oklch(39.7% 0.069 272.3), rgb(58, 68, 108).
Aa
White text reads best on this color (9.44:1).
About this color
#3A446C is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.069 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.040 away. White text reads best on it, at 9.44:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.22:1 |
| White text | 9.44:1 |
Values
| HEX | #3A446C |
| RGB | rgb(58, 68, 108) |
| HSL | hsl(228, 30%, 33%) |
| OKLCH | oklch(39.7% 0.069 272.3) |
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 #3A446C | 9.44:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #3A446C | 2.22:1 | Fails | Lc 12.2 | Not readable |
| #3A446C text on white | 9.44:1 | AAA | Lc 91.8 | Preferred for body text |
| #3A446C text on black | 2.22:1 | Fails | Lc -10.6 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D2D8ED
oklch(88.4% 0.03 273.1)
-
Step 300
300
#B5BFE3
oklch(80.9% 0.052 273)
-
Step 400
400
#8E9ED5
oklch(70.7% 0.083 271.6)
-
Step 500
500
#7385CA
oklch(63.1% 0.106 271.9)
-
Step 600
600
#5C6DB6
oklch(55.5% 0.115 272.3)
-
Step 700
700
#4C5B9D
oklch(49.1% 0.107 272.3)
-
Step 800
800
#3E4B7F
oklch(42.7% 0.088 271.6)
-
Step 900
900 (this color)
#3A446C
oklch(39.7% 0.069 272.3)
-
Step 950
950
#1F253C
oklch(27% 0.044 272.1)
#3A446C 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) | #36486E | 0.012 |
| Deuteranopia (no green cones) | #31446B | 0.013 |
| Tritanopia (no blue cones) | #294C53 | 0.061 |
| Achromatopsia (no color) | #464646 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A446C
#3A446C
oklch(39.7% 0.069 272.3)
- #544514
#544514
oklch(39.6% 0.069 91.6)
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 #3A446C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.040
- Twilight Blue #0A437A ΔE 0.052
- Charcoal #264653 ΔE 0.054
- Light Navy #155084 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.063
- Cobalt #1E488F ΔE 0.063
- Dusk Blue #26538D ΔE 0.064
Use #3A446C 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.