#405BB5
Closest named color: Mid Blue (#276AB3). oklch(49.9% 0.146 268.2), rgb(64, 91, 181).
Aa
White text reads best on this color (6.20:1).
About this color
#405BB5 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.146 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.043 away. White text reads best on it, at 6.20:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.38:1 |
| White text | 6.20:1 |
Values
| HEX | #405BB5 |
| RGB | rgb(64, 91, 181) |
| HSL | hsl(226, 48%, 48%) |
| OKLCH | oklch(49.9% 0.146 268.2) |
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 #405BB5 | 6.20:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #405BB5 | 3.38:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #405BB5 text on white | 6.20:1 | AA | Lc 80.7 | Fine for body text |
| #405BB5 text on black | 3.38:1 | AA large text | Lc -21.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F4
oklch(88.5% 0.039 267.9)
-
Step 300
300
#ADC0EF
oklch(81% 0.07 267.6)
-
Step 400
400
#839DE7
oklch(70.6% 0.113 268.7)
-
Step 500
500
#6483E0
oklch(63% 0.144 268.2)
-
Step 600
600
#4D6BCE
oklch(55.6% 0.156 268.3)
-
Step 700
700 (this color)
#405BB5
oklch(49.9% 0.146 268.2)
-
Step 800
800
#334990
oklch(42.7% 0.12 268.1)
-
Step 900
900
#2C3E73
oklch(37.7% 0.093 267.7)
-
Step 950
950
#1A2443
oklch(26.9% 0.06 268.7)
#405BB5 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) | #2A66B8 | 0.032 |
| Deuteranopia (no green cones) | #0C5CB3 | 0.038 |
| Tritanopia (no blue cones) | #00707F | 0.123 |
| Achromatopsia (no color) | #616161 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405BB5
#405BB5
oklch(49.9% 0.146 268.2)
- #7B5F00
#7B5F00
oklch(50% 0.102 88.5)
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 #405BB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.043
- French Blue #436BAD ΔE 0.048
- Iris #6258C4 ΔE 0.053
- Dusky Blue #475F94 ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.057
- Warm Blue #4B57DB ΔE 0.062
- Twilight #4E518B ΔE 0.069
- Dark Periwinkle #665FD1 ΔE 0.070
Use #405BB5 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.