#405BD6
Closest named color: Warm Blue (#4B57DB). oklch(52.4% 0.191 269.3), rgb(64, 91, 214).
Aa
White text reads best on this color (5.69:1).
About this color
#405BD6 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.191 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.017 away. White text reads best on it, at 5.69:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.68:1 |
| White text | 5.69:1 |
Values
| HEX | #405BD6 |
| RGB | rgb(64, 91, 214) |
| HSL | hsl(229, 65%, 55%) |
| OKLCH | oklch(52.4% 0.191 269.3) |
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 #405BD6 | 5.69:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #405BD6 | 3.68:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #405BD6 text on white | 5.69:1 | AA | Lc 78.0 | Fine for body text |
| #405BD6 text on black | 3.68:1 | AA large text | Lc -23.8 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9FA
oklch(88.6% 0.048 268.4)
-
Step 300
300
#AABFF9
oklch(80.9% 0.086 269)
-
Step 400
400
#7E9BF6
oklch(70.7% 0.137 269.3)
-
Step 500
500
#5F7FF2
oklch(63% 0.175 269.2)
-
Step 600
600 (this color)
#405BD6
oklch(52.4% 0.191 269.3)
-
Step 700
700
#3A53C3
oklch(49% 0.177 269.3)
-
Step 800
800
#30459E
oklch(42.8% 0.147 269.2)
-
Step 900
900
#2A3B7E
oklch(37.8% 0.115 269.5)
-
Step 950
950
#182349
oklch(26.9% 0.072 269)
#405BD6 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) | #006EDA | 0.052 |
| Deuteranopia (no green cones) | #0060D4 | 0.038 |
| Tritanopia (no blue cones) | #007990 | 0.152 |
| Achromatopsia (no color) | #676767 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405BD6
#405BD6
oklch(52.4% 0.191 269.3)
- #836600
#836600
oklch(52.4% 0.107 89.1)
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 #405BD6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.017
- Royal Blue #4169E1 ΔE 0.037
- Neon Blue #4361EE ΔE 0.039
- Azul #1D5DEC ΔE 0.042
- Iris #6258C4 ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.058
- Cerulean Blue #056EEE ΔE 0.060
Use #405BD6 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.