#403DAF
Closest named color: Majorelle Blue (#3F37C9). oklch(43.7% 0.176 277.4), rgb(64, 61, 175).
Aa
White text reads best on this color (8.38:1).
About this color
#403DAF is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.176 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Majorelle Blue (#3F37C9), ΔE 0.042 away. White text reads best on it, at 8.38:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Majorelle Blue (#3F37C9) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #403DAF |
| RGB | rgb(64, 61, 175) |
| HSL | hsl(242, 48%, 46%) |
| OKLCH | oklch(43.7% 0.176 277.4) |
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 #403DAF | 8.38:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #403DAF | 2.50:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #403DAF text on white | 8.38:1 | AAA | Lc 88.4 | Fine for body text |
| #403DAF text on black | 2.50:1 | Fails | Lc -13.8 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD6FF
oklch(88.4% 0.057 277.5)
-
Step 300
300
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8A95FF
oklch(70.7% 0.154 277.2)
-
Step 500
500
#7075FF
oklch(63.1% 0.201 277.4)
-
Step 600
600
#5B56F4
oklch(55.6% 0.228 277.4)
-
Step 700
700
#4C44D4
oklch(49% 0.212 277.6)
-
Step 800
800 (this color)
#403DAF
oklch(43.7% 0.176 277.4)
-
Step 900
900
#333488
oklch(37.8% 0.137 277.1)
-
Step 950
950
#1E1F4F
oklch(26.9% 0.086 278)
#403DAF 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) | #0052B3 | 0.063 |
| Deuteranopia (no green cones) | #0049AD | 0.055 |
| Tritanopia (no blue cones) | #005A70 | 0.146 |
| Achromatopsia (no color) | #4E4E4E | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403DAF
#403DAF
oklch(43.7% 0.176 277.4)
- #605100
#605100
oklch(43.7% 0.09 96.7)
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 #403DAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Majorelle Blue #3F37C9 ΔE 0.042
- Blueberry #464196 ΔE 0.043
- Sapphire #2138AB ΔE 0.044
- Blue With A Hint Of Purple #533CC6 ΔE 0.047
- Blue Blue #2242C7 ΔE 0.051
- Blurple #5539CC ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.060
- Indigo Blue #3A18B1 ΔE 0.064
Use #403DAF 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.