#405EC5
Closest named color: Warm Blue (#4B57DB). oklch(51.7% 0.164 268), rgb(64, 94, 197).
Aa
White text reads best on this color (5.79:1).
About this color
#405EC5 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.164 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.040 away. White text reads best on it, at 5.79:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #405EC5 |
| RGB | rgb(64, 94, 197) |
| HSL | hsl(226, 53%, 51%) |
| OKLCH | oklch(51.7% 0.164 268) |
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 #405EC5 | 5.79:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #405EC5 | 3.62:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #405EC5 text on white | 5.79:1 | AA | Lc 78.6 | Fine for body text |
| #405EC5 text on black | 3.62:1 | AA large text | Lc -23.2 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F7
oklch(88.5% 0.044 266.9)
-
Step 300
300
#AABFF5
oklch(80.8% 0.08 268.1)
-
Step 400
400
#7E9DF0
oklch(70.7% 0.127 267.6)
-
Step 500
500
#5F82EB
oklch(63.2% 0.162 267.7)
-
Step 600
600
#4868D9
oklch(55.5% 0.177 268.2)
-
Step 700
700 (this color)
#405EC5
oklch(51.7% 0.164 268)
-
Step 800
800
#2F4798
oklch(42.6% 0.136 267.8)
-
Step 900
900
#2A3D79
oklch(37.8% 0.105 267.9)
-
Step 950
950
#182447
oklch(27% 0.067 267.5)
#405EC5 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) | #1B6CC9 | 0.041 |
| Deuteranopia (no green cones) | #0060C3 | 0.039 |
| Tritanopia (no blue cones) | #007688 | 0.135 |
| Achromatopsia (no color) | #656565 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405EC5
#405EC5
oklch(51.7% 0.164 268)
- #816300
#816300
oklch(51.6% 0.105 87.8)
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 #405EC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.040
- Iris #6258C4 ΔE 0.045
- Mid Blue #276AB3 ΔE 0.049
- Royal Blue #4169E1 ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.054
- French Blue #436BAD ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.058
- Neon Blue #4361EE ΔE 0.063
Use #405EC5 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.