#405C99
Closest named color: Denim Blue (#3B5B92). oklch(48.3% 0.104 264.2), rgb(64, 92, 153).
Aa
White text reads best on this color (6.54:1).
About this color
#405C99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.104 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.013 away. White text reads best on it, at 6.54:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.20:1 |
| White text | 6.54:1 |
Values
| HEX | #405C99 |
| RGB | rgb(64, 92, 153) |
| HSL | hsl(221, 41%, 43%) |
| OKLCH | oklch(48.3% 0.104 264.2) |
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 #405C99 | 6.54:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #405C99 | 3.20:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #405C99 text on white | 6.54:1 | AA | Lc 82.3 | Fine for body text |
| #405C99 text on black | 3.20:1 | AA large text | Lc -19.6 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9EC
oklch(88.4% 0.028 265.4)
-
Step 300
300
#B0C1E2
oklch(80.9% 0.05 263.7)
-
Step 400
400
#87A0D4
oklch(70.6% 0.082 264.5)
-
Step 500
500
#6A88C8
oklch(63.1% 0.103 264.5)
-
Step 600
600
#5271B5
oklch(55.6% 0.112 264.5)
-
Step 700
700 (this color)
#405C99
oklch(48.3% 0.104 264.2)
-
Step 800
800
#374D7E
oklch(42.6% 0.086 264.7)
-
Step 900
900
#2F4165
oklch(37.8% 0.066 263.3)
-
Step 950
950
#1C263B
oklch(27% 0.042 264.3)
#405C99 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) | #42629B | 0.018 |
| Deuteranopia (no green cones) | #375A98 | 0.013 |
| Tritanopia (no blue cones) | #006973 | 0.092 |
| Achromatopsia (no color) | #5D5D5D | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405C99
#405C99
oklch(48.3% 0.104 264.2)
- #785900
#785900
oklch(48.3% 0.099 85)
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 #405C99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.013
- Dusky Blue #475F94 ΔE 0.016
- Denim #3B638C ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.036
- Twilight #4E518B ΔE 0.037
- Dusk #4E5481 ΔE 0.043
- Dusk Blue #26538D ΔE 0.044
- Peacock Blue #016795 ΔE 0.049
Use #405C99 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.