#405CA3
Closest named color: Denim Blue (#3B5B92). oklch(48.9% 0.119 266), rgb(64, 92, 163).
Aa
White text reads best on this color (6.40:1).
About this color
#405CA3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.119 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.028 away. White text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #405CA3 |
| RGB | rgb(64, 92, 163) |
| HSL | hsl(223, 44%, 45%) |
| OKLCH | oklch(48.9% 0.119 266) |
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 #405CA3 | 6.40:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #405CA3 | 3.27:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #405CA3 text on white | 6.40:1 | AA | Lc 81.6 | Fine for body text |
| #405CA3 text on black | 3.27:1 | AA large text | Lc -20.3 | 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
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AFC0E7
oklch(80.8% 0.058 266.6)
-
Step 400
400
#869FDB
oklch(70.7% 0.093 266.7)
-
Step 500
500
#6887D1
oklch(63.2% 0.117 265.9)
-
Step 600
600
#506FBE
oklch(55.6% 0.128 266.2)
-
Step 700
700 (this color)
#405CA3
oklch(48.9% 0.119 266)
-
Step 800
800
#354C85
oklch(42.7% 0.099 265.8)
-
Step 900
900
#2E406A
oklch(37.7% 0.076 265.4)
-
Step 950
950
#1B263E
oklch(27.1% 0.048 264.7)
#405CA3 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) | #3C64A6 | 0.022 |
| Deuteranopia (no green cones) | #2E5BA1 | 0.020 |
| Tritanopia (no blue cones) | #006C77 | 0.104 |
| Achromatopsia (no color) | #5F5F5F | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405CA3
#405CA3
oklch(48.9% 0.119 266)
- #795B00
#795B00
oklch(48.9% 0.1 86.2)
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 #405CA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.028
- Dusky Blue #475F94 ΔE 0.029
- French Blue #436BAD ΔE 0.043
- Mid Blue #276AB3 ΔE 0.044
- Twilight #4E518B ΔE 0.046
- Denim #3B638C ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.049
- Dusk Blue #26538D ΔE 0.053
Use #405CA3 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.