#3D43B3
Closest named color: Majorelle Blue (#3F37C9). oklch(44.9% 0.174 274.6), rgb(61, 67, 179).
Aa
White text reads best on this color (7.91:1).
About this color
#3D43B3 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.174 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Majorelle Blue (#3F37C9), ΔE 0.041 away. White text reads best on it, at 7.91:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Majorelle Blue (#3F37C9) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #3D43B3 |
| RGB | rgb(61, 67, 179) |
| HSL | hsl(237, 49%, 47%) |
| OKLCH | oklch(44.9% 0.174 274.6) |
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 #3D43B3 | 7.91:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #3D43B3 | 2.65:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #3D43B3 text on white | 7.91:1 | AAA | Lc 86.9 | Fine for body text |
| #3D43B3 text on black | 2.65:1 | Fails | Lc -15.2 | 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 800.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#AEBCFF
oklch(80.9% 0.096 274.9)
-
Step 400
400
#8597FF
oklch(70.8% 0.153 274.4)
-
Step 500
500
#6978FF
oklch(63.1% 0.199 274.4)
-
Step 600
600
#5359F4
oklch(55.6% 0.227 274.5)
-
Step 700
700
#4547D5
oklch(49.1% 0.212 274.7)
-
Step 800
800 (this color)
#3D43B3
oklch(44.9% 0.174 274.6)
-
Step 900
900
#2F3588
oklch(37.7% 0.137 274.6)
-
Step 950
950
#1B204F
oklch(26.9% 0.086 274.6)
#3D43B3 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) | #0057B7 | 0.058 |
| Deuteranopia (no green cones) | #004CB1 | 0.047 |
| Tritanopia (no blue cones) | #005F74 | 0.144 |
| Achromatopsia (no color) | #515151 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D43B3
#3D43B3
oklch(44.9% 0.174 274.6)
- #655400
#655400
oklch(45% 0.092 95.4)
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 #3D43B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Majorelle Blue #3F37C9 ΔE 0.041
- Blue Blue #2242C7 ΔE 0.043
- Blue With A Hint Of Purple #533CC6 ΔE 0.045
- Sapphire #2138AB ΔE 0.048
- Blueberry #464196 ΔE 0.048
- Blurple #5539CC ΔE 0.055
- Bluey Purple #6241C7 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.067
Use #3D43B3 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.