#405E99
Closest named color: Dusky Blue (#475F94). oklch(48.7% 0.102 262.8), rgb(64, 94, 153).
Aa
White text reads best on this color (6.40:1).
About this color
#405E99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.102 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.012 away. White text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #405E99 |
| RGB | rgb(64, 94, 153) |
| HSL | hsl(220, 41%, 43%) |
| OKLCH | oklch(48.7% 0.102 262.8) |
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 #405E99 | 6.40:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #405E99 | 3.27:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #405E99 text on white | 6.40:1 | AA | Lc 81.7 | Fine for body text |
| #405E99 text on black | 3.27:1 | AA large text | Lc -20.2 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0DAEC
oklch(88.6% 0.027 262.3)
-
Step 300
300
#B0C1E1
oklch(80.9% 0.049 263.1)
-
Step 400
400
#87A1D2
oklch(70.7% 0.078 262.8)
-
Step 500
500
#6989C7
oklch(63.2% 0.101 262.9)
-
Step 600
600
#5072B3
oklch(55.6% 0.109 262.4)
-
Step 700
700 (this color)
#405E99
oklch(48.7% 0.102 262.8)
-
Step 800
800
#364E7D
oklch(42.7% 0.084 262.8)
-
Step 900
900
#2F4164
oklch(37.7% 0.065 262.9)
-
Step 950
950
#1B263B
oklch(26.9% 0.042 262.7)
#405E99 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) | #45639B | 0.016 |
| Deuteranopia (no green cones) | #3A5B98 | 0.012 |
| Tritanopia (no blue cones) | #006B74 | 0.091 |
| Achromatopsia (no color) | #5F5F5F | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405E99
#405E99
oklch(48.7% 0.102 262.8)
- #7B5900
#7B5900
oklch(48.7% 0.1 82.7)
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 #405E99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.012
- Denim Blue #3B5B92 ΔE 0.015
- Denim #3B638C ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.036
- Twilight #4E518B ΔE 0.041
- Dusk #4E5481 ΔE 0.044
- French Blue #436BAD ΔE 0.045
- Peacock Blue #016795 ΔE 0.045
Use #405E99 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.