#405CA9
Closest named color: Dusky Blue (#475F94). oklch(49.3% 0.127 266.7), rgb(64, 92, 169).
Aa
White text reads best on this color (6.32:1).
About this color
#405CA9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.127 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.037 away. White text reads best on it, at 6.32:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.32:1 |
| White text | 6.32:1 |
Values
| HEX | #405CA9 |
| RGB | rgb(64, 92, 169) |
| HSL | hsl(224, 45%, 46%) |
| OKLCH | oklch(49.3% 0.127 266.7) |
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 #405CA9 | 6.32:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #405CA9 | 3.32:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #405CA9 text on white | 6.32:1 | AA | Lc 81.2 | Fine for body text |
| #405CA9 text on black | 3.32:1 | AA large text | Lc -20.6 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AEC0E9
oklch(80.8% 0.061 266.4)
-
Step 400
400
#859FDF
oklch(70.8% 0.099 266.9)
-
Step 500
500
#6786D6
oklch(63.2% 0.126 266.8)
-
Step 600
600
#4E6EC3
oklch(55.6% 0.137 266.5)
-
Step 700
700 (this color)
#405CA9
oklch(49.3% 0.127 266.7)
-
Step 800
800
#344B88
oklch(42.6% 0.105 266.5)
-
Step 900
900
#2E3F6D
oklch(37.7% 0.082 267.1)
-
Step 950
950
#1B2540
oklch(27% 0.052 267.5)
#405CA9 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) | #3865AC | 0.025 |
| Deuteranopia (no green cones) | #275BA7 | 0.026 |
| Tritanopia (no blue cones) | #006D7A | 0.109 |
| Achromatopsia (no color) | #606060 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405CA9
#405CA9
oklch(49.3% 0.127 266.7)
- #7A5C00
#7A5C00
oklch(49.2% 0.101 86.4)
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 #405CA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.038
- Mid Blue #276AB3 ΔE 0.041
- French Blue #436BAD ΔE 0.042
- Twilight #4E518B ΔE 0.053
- Denim #3B638C ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.058
- Dusk Blue #26538D ΔE 0.059
Use #405CA9 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.