#405599
Closest named color: Denim Blue (#3B5B92). oklch(46.7% 0.113 268.8), rgb(64, 85, 153).
Aa
White text reads best on this color (7.05:1).
About this color
#405599 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.113 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.023 away. White text reads best on it, at 7.05:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #405599 |
| RGB | rgb(64, 85, 153) |
| HSL | hsl(226, 41%, 43%) |
| OKLCH | oklch(46.7% 0.113 268.8) |
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 #405599 | 7.05:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #405599 | 2.97:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #405599 text on white | 7.05:1 | AAA | Lc 84.3 | Fine for body text |
| #405599 text on black | 2.97:1 | Fails | Lc -17.7 | 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 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
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B2C0E5
oklch(80.9% 0.055 268.9)
-
Step 400
400
#8A9FD8
oklch(70.8% 0.087 268.5)
-
Step 500
500
#6D86CD
oklch(63.1% 0.111 268.4)
-
Step 600
600
#566EBA
oklch(55.5% 0.122 269)
-
Step 700
700 (this color)
#405599
oklch(46.7% 0.113 268.8)
-
Step 800
800
#3A4B82
oklch(42.6% 0.094 269.2)
-
Step 900
900
#323F68
oklch(37.7% 0.072 269.4)
-
Step 950
950
#1D253D
oklch(26.9% 0.046 269.1)
#405599 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) | #375D9C | 0.023 |
| Deuteranopia (no green cones) | #2B5598 | 0.023 |
| Tritanopia (no blue cones) | #01646F | 0.102 |
| Achromatopsia (no color) | #595959 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405599
#405599
oklch(46.7% 0.113 268.8)
- #705600
#705600
oklch(46.7% 0.095 88.2)
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 #405599, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.023
- Twilight #4E518B ΔE 0.029
- Dusky Blue #475F94 ΔE 0.034
- Dusk Blue #26538D ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.039
- Dusk #4E5481 ΔE 0.042
- Denim #3B638C ΔE 0.050
- Blueberry #464196 ΔE 0.052
Use #405599 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.