#4129BF
Closest named color: Majorelle Blue (#3F37C9). oklch(42.5% 0.216 279.2), rgb(65, 41, 191).
Aa
White text reads best on this color (9.15:1).
About this color
#4129BF is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.216 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Majorelle Blue (#3F37C9), ΔE 0.030 away. White text reads best on it, at 9.15:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.216) |
| Temperature | cool |
| Nearest name | Majorelle Blue (#3F37C9) |
| Black text | 2.29:1 |
| White text | 9.15:1 |
Values
| HEX | #4129BF |
| RGB | rgb(65, 41, 191) |
| HSL | hsl(250, 65%, 45%) |
| OKLCH | oklch(42.5% 0.216 279.2) |
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 #4129BF | 9.15:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #4129BF | 2.29:1 | Fails | Lc 14.0 | Not readable |
| #4129BF text on white | 9.15:1 | AAA | Lc 89.9 | Fine for body text |
| #4129BF text on black | 2.29:1 | Fails | Lc -12.3 | 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
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D0D6FF
oklch(88.5% 0.057 278.6)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8D93FF
oklch(70.6% 0.156 279.2)
-
Step 500
500
#7474FF
oklch(63.2% 0.201 278.9)
-
Step 600
600
#604DFF
oklch(55.6% 0.25 279.3)
-
Step 700
700
#512EEE
oklch(49.2% 0.261 279.1)
-
Step 800
800 (this color)
#4129BF
oklch(42.5% 0.216 279.2)
-
Step 900
900
#362A97
oklch(37.7% 0.169 279.5)
-
Step 950
950
#1F1B58
oklch(27% 0.106 279.5)
#4129BF 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) | #004DC3 | 0.079 |
| Deuteranopia (no green cones) | #0042BC | 0.065 |
| Tritanopia (no blue cones) | #005674 | 0.172 |
| Achromatopsia (no color) | #484848 | 0.217 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4129BF
#4129BF
oklch(42.5% 0.216 279.2)
- #5A4F00
#5A4F00
oklch(42.5% 0.088 100.1)
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 #4129BF, closest first.
No curated palette has a color within ΔE 0.04 of #4129BF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Majorelle Blue #3F37C9 ΔE 0.030
- Violet Blue #510AC9 ΔE 0.038
- Indigo Blue #3A18B1 ΔE 0.038
- Blue With A Hint Of Purple #533CC6 ΔE 0.050
- Blurple #5539CC ΔE 0.052
- Sapphire #2138AB ΔE 0.054
- Blue Blue #2242C7 ΔE 0.055
- Purple Blue #5D21D0 ΔE 0.055
Use #4129BF 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.