#405199
Closest named color: Twilight (#4E518B). oklch(45.9% 0.118 271.1), rgb(64, 81, 153).
Aa
White text reads best on this color (7.35:1).
About this color
#405199 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.118 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.030 away. White text reads best on it, at 7.35:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.85:1 |
| White text | 7.35:1 |
Values
| HEX | #405199 |
| RGB | rgb(64, 81, 153) |
| HSL | hsl(229, 41%, 43%) |
| OKLCH | oklch(45.9% 0.118 271.1) |
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 #405199 | 7.35:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #405199 | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #405199 text on white | 7.35:1 | AAA | Lc 85.4 | Fine for body text |
| #405199 text on black | 2.85:1 | Fails | Lc -16.7 | 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 800.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#CFD8F3
oklch(88.4% 0.038 271)
-
Step 300
300
#B0BFEE
oklch(80.9% 0.069 271)
-
Step 400
400
#879CE6
oklch(70.6% 0.111 271.2)
-
Step 500
500
#6A82DF
oklch(63.1% 0.142 270.9)
-
Step 600
600
#536ACC
oklch(55.6% 0.153 270.8)
-
Step 700
700
#4457B1
oklch(49% 0.144 271.2)
-
Step 800
800 (this color)
#405199
oklch(45.9% 0.118 271.1)
-
Step 900
900
#303D72
oklch(37.7% 0.092 271.1)
-
Step 950
950
#1C2443
oklch(27% 0.059 271.1)
#405199 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) | #305A9C | 0.028 |
| Deuteranopia (no green cones) | #235297 | 0.031 |
| Tritanopia (no blue cones) | #04616D | 0.106 |
| Achromatopsia (no color) | #565656 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405199
#405199
oklch(45.9% 0.118 271.1)
- #6B5500
#6B5500
oklch(45.9% 0.094 91.4)
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 #405199, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.032
- Dusk Blue #26538D ΔE 0.036
- Blueberry #464196 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.045
- Dusk #4E5481 ΔE 0.046
- Cobalt #1E488F ΔE 0.051
Use #405199 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.