#405DAB
Closest named color: Mid Blue (#276AB3). oklch(49.6% 0.129 266.4), rgb(64, 93, 171).
Aa
White text reads best on this color (6.22:1).
About this color
#405DAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.129 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.038 away. White text reads best on it, at 6.22:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.37:1 |
| White text | 6.22:1 |
Values
| HEX | #405DAB |
| RGB | rgb(64, 93, 171) |
| HSL | hsl(224, 46%, 46%) |
| OKLCH | oklch(49.6% 0.129 266.4) |
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 #405DAB | 6.22:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #405DAB | 3.37:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #405DAB text on white | 6.22:1 | AA | Lc 80.8 | Fine for body text |
| #405DAB text on black | 3.37:1 | AA large text | Lc -21.0 | 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
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AEC0EA
oklch(80.8% 0.063 266.8)
-
Step 400
400
#849FDF
oklch(70.7% 0.099 266.4)
-
Step 500
500
#6686D7
oklch(63.2% 0.128 266.5)
-
Step 600
600
#4D6EC4
oklch(55.6% 0.139 266.2)
-
Step 700
700 (this color)
#405DAB
oklch(49.6% 0.129 266.4)
-
Step 800
800
#344B89
oklch(42.7% 0.107 266.6)
-
Step 900
900
#2D3F6E
oklch(37.7% 0.084 266.6)
-
Step 950
950
#1A2540
oklch(26.9% 0.053 266.2)
#405DAB 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) | #3866AE | 0.024 |
| Deuteranopia (no green cones) | #275CA9 | 0.025 |
| Tritanopia (no blue cones) | #006F7B | 0.112 |
| Achromatopsia (no color) | #616161 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405DAB
#405DAB
oklch(49.6% 0.129 266.4)
- #7B5D00
#7B5D00
oklch(49.5% 0.101 86.6)
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 #405DAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.039
- French Blue #436BAD ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.041
- Denim #3B638C ΔE 0.057
- Twilight #4E518B ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.061
- Peacock Blue #016795 ΔE 0.063
Use #405DAB 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.