#405ED9
Closest named color: Warm Blue (#4B57DB). oklch(53.2% 0.191 268.6), rgb(64, 94, 217).
Aa
White text reads best on this color (5.49:1).
About this color
#405ED9 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, 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 0.019 away. White text reads best on it, at 5.49:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.82:1 |
| White text | 5.49:1 |
Values
| HEX | #405ED9 |
| RGB | rgb(64, 94, 217) |
| HSL | hsl(228, 67%, 55%) |
| OKLCH | oklch(53.2% 0.191 268.6) |
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 #405ED9 | 5.49:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #405ED9 | 3.82:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #405ED9 text on white | 5.49:1 | AA | Lc 76.9 | Fine for body text |
| #405ED9 text on black | 3.82:1 | AA large text | Lc -24.8 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
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
#A9BFF9
oklch(80.9% 0.086 268.4)
-
Step 400
400
#7D9BF6
oklch(70.6% 0.138 268.9)
-
Step 500
500
#5E80F3
oklch(63.2% 0.176 268.6)
-
Step 600
600 (this color)
#405ED9
oklch(53.2% 0.191 268.6)
-
Step 700
700
#3853C4
oklch(49% 0.179 268.7)
-
Step 800
800
#2E459E
oklch(42.6% 0.147 268.5)
-
Step 900
900
#293B7E
oklch(37.7% 0.115 269)
-
Step 950
950
#18234A
oklch(27% 0.074 269.2)
#405ED9 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) | #0070DD | 0.050 |
| Deuteranopia (no green cones) | #0062D7 | 0.037 |
| Tritanopia (no blue cones) | #007C92 | 0.154 |
| Achromatopsia (no color) | #696969 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405ED9
#405ED9
oklch(53.2% 0.191 268.6)
- #866800
#866800
oklch(53.2% 0.109 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 #405ED9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.019
- Royal Blue #4169E1 ΔE 0.029
- Neon Blue #4361EE ΔE 0.033
- Azul #1D5DEC ΔE 0.039
- Dark Periwinkle #665FD1 ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.053
- Iris #6258C4 ΔE 0.054
- Slate Blue #6A5ACD ΔE 0.058
Use #405ED9 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.