#3D31BB
Closest named color: Majorelle Blue (#3F37C9). oklch(42.8% 0.205 277.2), rgb(61, 49, 187).
Aa
White text reads best on this color (8.91:1).
About this color
#3D31BB is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.205 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Majorelle Blue (#3F37C9), ΔE 0.026 away. White text reads best on it, at 8.91:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Majorelle Blue (#3F37C9) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #3D31BB |
| RGB | rgb(61, 49, 187) |
| HSL | hsl(245, 58%, 46%) |
| OKLCH | oklch(42.8% 0.205 277.2) |
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 #3D31BB | 8.91:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #3D31BB | 2.35:1 | Fails | Lc 14.5 | Not readable |
| #3D31BB text on white | 8.91:1 | AAA | Lc 89.5 | Fine for body text |
| #3D31BB text on black | 2.35:1 | Fails | Lc -12.7 | 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
#E4E8FF
oklch(93.5% 0.031 277.9)
-
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
#5A50FF
oklch(55.6% 0.248 277.1)
-
Step 700
700
#4B38E7
oklch(49.1% 0.247 277.1)
-
Step 800
800 (this color)
#3D31BB
oklch(42.8% 0.205 277.2)
-
Step 900
900
#322E93
oklch(37.6% 0.16 277.2)
-
Step 950
950
#1D1D56
oklch(27.1% 0.1 277.3)
#3D31BB 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) | #004FBF | 0.070 |
| Deuteranopia (no green cones) | #0044B9 | 0.056 |
| Tritanopia (no blue cones) | #005873 | 0.164 |
| Achromatopsia (no color) | #4A4A4A | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D31BB
#3D31BB
oklch(42.8% 0.205 277.2)
- #5D4F00
#5D4F00
oklch(42.9% 0.088 97.4)
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 #3D31BB, closest first.
No curated palette has a color within ΔE 0.04 of #3D31BB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Majorelle Blue #3F37C9 ΔE 0.026
- Indigo Blue #3A18B1 ΔE 0.043
- Sapphire #2138AB ΔE 0.043
- Blue Blue #2242C7 ΔE 0.045
- Blue With A Hint Of Purple #533CC6 ΔE 0.048
- Violet Blue #510AC9 ΔE 0.051
- Blurple #5539CC ΔE 0.052
- Imperial Purple #480CA8 ΔE 0.062
Use #3D31BB 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.