#405171
Closest named color: YInMn Blue (#415A77). oklch(43.5% 0.057 262.6), rgb(64, 81, 113).
Aa
White text reads best on this color (7.97:1).
About this color
#405171 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.057 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.027 away. White text reads best on it, at 7.97:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #405171 |
| RGB | rgb(64, 81, 113) |
| HSL | hsl(219, 28%, 35%) |
| OKLCH | oklch(43.5% 0.057 262.6) |
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 #405171 | 7.97:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #405171 | 2.63:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #405171 text on white | 7.97:1 | AAA | Lc 87.6 | Fine for body text |
| #405171 text on black | 2.63:1 | Fails | Lc -14.5 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D3D9E6
oklch(88.5% 0.019 266)
-
Step 300
300
#B5C1D7
oklch(80.9% 0.034 262.7)
-
Step 400
400
#8FA1C3
oklch(70.7% 0.054 263.1)
-
Step 500
500
#738AB4
oklch(63.2% 0.069 262.2)
-
Step 600
600
#5C739F
oklch(55.5% 0.074 262.9)
-
Step 700
700
#4B6188
oklch(49.2% 0.068 261.5)
-
Step 800
800 (this color)
#405171
oklch(43.5% 0.057 262.6)
-
Step 900
900
#35425A
oklch(37.8% 0.045 262.4)
-
Step 950
950
#1F2735
oklch(27.2% 0.029 261.4)
#405171 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) | #465372 | 0.011 |
| Deuteranopia (no green cones) | #404F70 | 0.006 |
| Tritanopia (no blue cones) | #2F585C | 0.052 |
| Achromatopsia (no color) | #515151 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405171
#405171
oklch(43.5% 0.057 262.6)
- #614E2A
#614E2A
oklch(43.5% 0.058 82.2)
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 #405171, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.027
- Dusk #4E5481 ΔE 0.035
- Dusty Grape #545775 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.043
- Twilight #4E518B ΔE 0.049
- Light Navy #155084 ΔE 0.052
- Dusk Blue #26538D ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.053
Use #405171 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.