#405E8B
Closest named color: Denim (#3B638C). oklch(47.9% 0.081 258.3), rgb(64, 94, 139).
Aa
White text reads best on this color (6.57:1).
About this color
#405E8B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.081 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.015 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #405E8B |
| RGB | rgb(64, 94, 139) |
| HSL | hsl(216, 37%, 40%) |
| OKLCH | oklch(47.9% 0.081 258.3) |
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 #405E8B | 6.57:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #405E8B | 3.19:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #405E8B text on white | 6.57:1 | AA | Lc 82.5 | Fine for body text |
| #405E8B text on black | 3.19:1 | AA large text | Lc -19.5 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE8
oklch(88.5% 0.022 256.7)
-
Step 300
300
#B1C2DB
oklch(80.9% 0.04 257.9)
-
Step 400
400
#89A2C8
oklch(70.7% 0.063 258.6)
-
Step 500
500
#6B8BBA
oklch(63.1% 0.08 257.9)
-
Step 600
600
#5374A6
oklch(55.5% 0.087 258.5)
-
Step 700
700 (this color)
#405E8B
oklch(47.9% 0.081 258.3)
-
Step 800
800
#385074
oklch(42.8% 0.067 258.3)
-
Step 900
900
#30425D
oklch(37.6% 0.052 258.3)
-
Step 950
950
#1C2737
oklch(27% 0.034 257.7)
#405E8B 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) | #4C618D | 0.019 |
| Deuteranopia (no green cones) | #435A8A | 0.012 |
| Tritanopia (no blue cones) | #19686E | 0.073 |
| Achromatopsia (no color) | #5D5D5D | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405E8B
#405E8B
oklch(47.9% 0.081 258.3)
- #765721
#765721
oklch(47.8% 0.081 78.3)
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 #405E8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.015
- Denim Blue #3B5B92 ΔE 0.017
- Dusky Blue #475F94 ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.025
- YInMn Blue #415A77 ΔE 0.032
- Dusk #4E5481 ΔE 0.033
- Twilight #4E518B ΔE 0.040
- Dusty Grape #545775 ΔE 0.042
Use #405E8B 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.