#405FE8
Closest named color: Neon Blue (#4361EE). oklch(54.6% 0.21 268.6), rgb(64, 95, 232).
Aa
White text reads best on this color (5.22:1).
About this color
#405FE8 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.210 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.011 away. White text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.210) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.02:1 |
| White text | 5.22:1 |
Values
| HEX | #405FE8 |
| RGB | rgb(64, 95, 232) |
| HSL | hsl(229, 79%, 58%) |
| OKLCH | oklch(54.6% 0.21 268.6) |
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 #405FE8 | 5.22:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #405FE8 | 4.02:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #405FE8 text on white | 5.22:1 | AA | Lc 75.3 | Fine for body text |
| #405FE8 text on black | 4.02:1 | AA large text | Lc -26.4 | 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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CBD9FD
oklch(88.6% 0.052 268.5)
-
Step 300
300
#A7BFFE
oklch(81% 0.093 268.2)
-
Step 400
400
#7A9AFE
oklch(70.6% 0.151 268.9)
-
Step 500
500
#5A7DFC
oklch(63% 0.193 268.7)
-
Step 600
600 (this color)
#405FE8
oklch(54.6% 0.21 268.6)
-
Step 700
700
#3550CD
oklch(49.1% 0.195 268.6)
-
Step 800
800
#2C43A6
oklch(42.8% 0.161 268.6)
-
Step 900
900
#273A83
oklch(37.8% 0.125 268.7)
-
Step 950
950
#16234D
oklch(27.1% 0.079 267.9)
#405FE8 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) | #0074ED | 0.053 |
| Deuteranopia (no green cones) | #0065E5 | 0.035 |
| Tritanopia (no blue cones) | #00829A | 0.168 |
| Achromatopsia (no color) | #6C6C6C | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405FE8
#405FE8
oklch(54.6% 0.21 268.6)
- #8B6C00
#8B6C00
oklch(54.7% 0.112 88.7)
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 #405FE8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.011
- Royal Blue #4169E1 ΔE 0.027
- Warm Blue #4B57DB ΔE 0.028
- Azul #1D5DEC ΔE 0.029
- Cerulean Blue #056EEE ΔE 0.042
- Bright Blue #0165FC ΔE 0.044
- Dark Periwinkle #665FD1 ΔE 0.059
- Electric Blue #0652FF ΔE 0.060
Use #405FE8 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.