#3B4D64
Closest named color: Dark Grey Blue (#29465B). oklch(41.5% 0.045 254.8), rgb(59, 77, 100).
Aa
White text reads best on this color (8.63:1).
About this color
#3B4D64 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.045 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.036 away. White text reads best on it, at 8.63:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.43:1 |
| White text | 8.63:1 |
Values
| HEX | #3B4D64 |
| RGB | rgb(59, 77, 100) |
| HSL | hsl(214, 26%, 31%) |
| OKLCH | oklch(41.5% 0.045 254.8) |
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 #3B4D64 | 8.63:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #3B4D64 | 2.43:1 | Fails | Lc 14.4 | Not readable |
| #3B4D64 text on white | 8.63:1 | AAA | Lc 89.6 | Fine for body text |
| #3B4D64 text on black | 2.43:1 | 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
#B6C2D2
oklch(81% 0.026 255.6)
-
Step 400
400
#8FA2BB
oklch(70.6% 0.043 255.3)
-
Step 500
500
#748BAA
oklch(63% 0.054 256)
-
Step 600
600
#5C7595
oklch(55.5% 0.058 254.8)
-
Step 700
700
#4C627F
oklch(49% 0.054 255.5)
-
Step 800
800 (this color)
#3B4D64
oklch(41.5% 0.045 254.8)
-
Step 900
900
#354354
oklch(37.8% 0.034 253.6)
-
Step 950
950
#1F2731
oklch(27% 0.022 254.2)
#3B4D64 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) | #454E65 | 0.015 |
| Deuteranopia (no green cones) | #404A64 | 0.011 |
| Tritanopia (no blue cones) | #2D5255 | 0.039 |
| Achromatopsia (no color) | #4C4C4C | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4D64
#3B4D64
oklch(41.5% 0.045 254.8)
- #5A4830
#5A4830
oklch(41.4% 0.044 74.1)
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 #3B4D64, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.043
- Charcoal #264653 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.047
- Dusty Grape #545775 ΔE 0.055
- Deep Teal #00555A ΔE 0.056
- Dusk #4E5481 ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.059
Use #3B4D64 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.