#403EA2
Closest named color: Blueberry (#464196). oklch(42.8% 0.157 278.3), rgb(64, 62, 162).
Aa
White text reads best on this color (8.64:1).
About this color
#403EA2 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.157 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.024 away. White text reads best on it, at 8.64:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.42:1 |
| White text | 8.64:1 |
Values
| HEX | #403EA2 |
| RGB | rgb(64, 62, 162) |
| HSL | hsl(241, 45%, 44%) |
| OKLCH | oklch(42.8% 0.157 278.3) |
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 #403EA2 | 8.64:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #403EA2 | 2.42:1 | Fails | Lc 14.7 | Not readable |
| #403EA2 text on white | 8.64:1 | AAA | Lc 89.2 | Fine for body text |
| #403EA2 text on black | 2.42:1 | Fails | Lc -13.0 | Not readable |
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 800.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D1D7FB
oklch(88.6% 0.05 277.9)
-
Step 300
300
#B3BBFC
oklch(80.9% 0.092 278.7)
-
Step 400
400
#8D95FA
oklch(70.7% 0.147 278.5)
-
Step 500
500
#7377F7
oklch(63.1% 0.187 278.2)
-
Step 600
600
#5E5CE6
oklch(55.6% 0.203 278.1)
-
Step 700
700
#4E4AC8
oklch(49.1% 0.19 278.2)
-
Step 800
800 (this color)
#403EA2
oklch(42.8% 0.157 278.3)
-
Step 900
900
#353680
oklch(37.6% 0.122 278.2)
-
Step 950
950
#1F204B
oklch(26.9% 0.078 278.8)
#403EA2 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) | #0050A5 | 0.061 |
| Deuteranopia (no green cones) | #0047A0 | 0.055 |
| Tritanopia (no blue cones) | #00566A | 0.133 |
| Achromatopsia (no color) | #4C4C4C | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403EA2
#403EA2
oklch(42.8% 0.157 278.3)
- #5C4F00
#5C4F00
oklch(42.8% 0.088 98.3)
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 #403EA2, closest first.
No curated palette has a color within ΔE 0.04 of #403EA2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.024
- Dark Slate Blue #483D8B ΔE 0.040
- Sapphire #2138AB ΔE 0.046
- Cobalt #1E488F ΔE 0.055
- Majorelle Blue #3F37C9 ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.064
- Blue Blue #2242C7 ΔE 0.068
- Rebecca Purple #663399 ΔE 0.070
Use #403EA2 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.