#405BC0
Closest named color: Warm Blue (#4B57DB). oklch(50.7% 0.161 268.8), rgb(64, 91, 192).
Aa
White text reads best on this color (6.04:1).
About this color
#405BC0 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.161 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.045 away. White text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.47:1 |
| White text | 6.04:1 |
Values
| HEX | #405BC0 |
| RGB | rgb(64, 91, 192) |
| HSL | hsl(227, 50%, 50%) |
| OKLCH | oklch(50.7% 0.161 268.8) |
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 #405BC0 | 6.04:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #405BC0 | 3.47:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #405BC0 text on white | 6.04:1 | AA | Lc 79.8 | Fine for body text |
| #405BC0 text on black | 3.47:1 | AA large text | Lc -22.0 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ACBFF4
oklch(80.9% 0.078 269.3)
-
Step 400
400
#809CEF
oklch(70.6% 0.126 268.9)
-
Step 500
500
#6281E9
oklch(63% 0.16 269)
-
Step 600
600
#4A68D7
oklch(55.5% 0.173 268.8)
-
Step 700
700 (this color)
#405BC0
oklch(50.7% 0.161 268.8)
-
Step 800
800
#314797
oklch(42.7% 0.134 268.6)
-
Step 900
900
#2B3C78
oklch(37.6% 0.104 269)
-
Step 950
950
#192446
oklch(27% 0.065 268.3)
#405BC0 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) | #1969C4 | 0.042 |
| Deuteranopia (no green cones) | #005DBE | 0.040 |
| Tritanopia (no blue cones) | #007385 | 0.133 |
| Achromatopsia (no color) | #636363 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405BC0
#405BC0
oklch(50.7% 0.161 268.8)
- #7D6100
#7D6100
oklch(50.7% 0.104 88.9)
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 #405BC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.045
- Iris #6258C4 ΔE 0.046
- Mid Blue #276AB3 ΔE 0.050
- French Blue #436BAD ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.060
- Royal Blue #4169E1 ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.067
Use #405BC0 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.