#3A4D64
Closest named color: Dark Grey Blue (#29465B). oklch(41.4% 0.046 253.6), rgb(58, 77, 100).
Aa
White text reads best on this color (8.65:1).
About this color
#3A4D64 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.046 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.035 away. White text reads best on it, at 8.65:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.42:1 |
| White text | 8.65:1 |
Values
| HEX | #3A4D64 |
| RGB | rgb(58, 77, 100) |
| HSL | hsl(213, 27%, 31%) |
| OKLCH | oklch(41.4% 0.046 253.6) |
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 #3A4D64 | 8.65:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #3A4D64 | 2.42:1 | Fails | Lc 14.3 | Not readable |
| #3A4D64 text on white | 8.65:1 | AAA | Lc 89.7 | Fine for body text |
| #3A4D64 text on black | 2.42:1 | Fails | Lc -12.6 | 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 800.
-
Step 50
50
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B5C2D2
oklch(80.9% 0.027 253.6)
-
Step 400
400
#8FA3BB
oklch(70.8% 0.042 253.1)
-
Step 500
500
#738CAA
oklch(63.2% 0.054 253.2)
-
Step 600
600
#5B7596
oklch(55.5% 0.06 254.7)
-
Step 700
700
#4B6380
oklch(49.2% 0.055 253.5)
-
Step 800
800 (this color)
#3A4D64
oklch(41.4% 0.046 253.6)
-
Step 900
900
#344354
oklch(37.7% 0.035 251.9)
-
Step 950
950
#1F2731
oklch(27% 0.022 254.2)
#3A4D64 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) | #444E65 | 0.015 |
| Deuteranopia (no green cones) | #3F4A64 | 0.011 |
| Tritanopia (no blue cones) | #2B5255 | 0.039 |
| Achromatopsia (no color) | #4B4B4B | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4D64
#3A4D64
oklch(41.4% 0.046 253.6)
- #5B482F
#5B482F
oklch(41.5% 0.046 73.6)
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 #3A4D64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.042
- Charcoal #264653 ΔE 0.044
- YInMn Blue #415A77 ΔE 0.047
- Deep Teal #00555A ΔE 0.055
- Dusty Grape #545775 ΔE 0.056
- Dusk #4E5481 ΔE 0.059
- Charcoal Grey #3C4142 ΔE 0.059
Use #3A4D64 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.