#405F73
Closest named color: YInMn Blue (#415A77). oklch(47% 0.049 237.5), rgb(64, 95, 115).
Aa
White text reads best on this color (6.76:1).
About this color
#405F73 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.049 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.019 away. White text reads best on it, at 6.76:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.10:1 |
| White text | 6.76:1 |
Values
| HEX | #405F73 |
| RGB | rgb(64, 95, 115) |
| HSL | hsl(204, 28%, 35%) |
| OKLCH | oklch(47% 0.049 237.5) |
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 #405F73 | 6.76:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #405F73 | 3.10:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #405F73 text on white | 6.76:1 | AA | Lc 83.3 | Fine for body text |
| #405F73 text on black | 3.10:1 | AA large text | Lc -18.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D1DBE1
oklch(88.6% 0.014 233.8)
-
Step 300
300
#B3C3CE
oklch(80.8% 0.023 237.7)
-
Step 400
400
#8BA5B6
oklch(70.8% 0.038 236.8)
-
Step 500
500
#6E8EA4
oklch(63% 0.049 238.6)
-
Step 600
600
#56788F
oklch(55.6% 0.053 238.5)
-
Step 700
700 (this color)
#405F73
oklch(47% 0.049 237.5)
-
Step 800
800
#3A5263
oklch(42.6% 0.041 239.8)
-
Step 900
900
#324450
oklch(37.6% 0.031 237.8)
-
Step 950
950
#1D282F
oklch(27% 0.02 236.4)
#405F73 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) | #565E74 | 0.030 |
| Deuteranopia (no green cones) | #4F5973 | 0.025 |
| Tritanopia (no blue cones) | #2C6465 | 0.039 |
| Achromatopsia (no color) | #5B5B5B | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405F73
#405F73
oklch(47% 0.049 237.5)
- #70543F
#70543F
oklch(47% 0.049 58.1)
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 #405F73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.019
- Slate #516572 ΔE 0.031
- Dusty Grape #545775 ΔE 0.035
- Denim #3B638C ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.046
- Petrol #005F6A ΔE 0.048
- Dusk #4E5481 ΔE 0.049
- Dark Aqua #05696B ΔE 0.053
Use #405F73 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.