#3B47DB
Closest named color: Warm Blue (#4B57DB). oklch(49.1% 0.222 271.5), rgb(59, 71, 219).
Aa
White text reads best on this color (6.75:1).
About this color
#3B47DB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.222 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.043 away. White text reads best on it, at 6.75:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.222) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.11:1 |
| White text | 6.75:1 |
Values
| HEX | #3B47DB |
| RGB | rgb(59, 71, 219) |
| HSL | hsl(236, 69%, 55%) |
| OKLCH | oklch(49.1% 0.222 271.5) |
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 #3B47DB | 6.75:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #3B47DB | 3.11:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #3B47DB text on white | 6.75:1 | AA | Lc 82.5 | Fine for body text |
| #3B47DB text on black | 3.11:1 | AA large text | Lc -19.4 | 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 700.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#AABDFF
oklch(80.8% 0.096 271.7)
-
Step 400
400
#7F98FF
oklch(70.6% 0.153 271.7)
-
Step 500
500
#617AFF
oklch(63% 0.198 271.6)
-
Step 600
600
#4859FB
oklch(55.6% 0.238 271.4)
-
Step 700
700 (this color)
#3B47DB
oklch(49.1% 0.222 271.5)
-
Step 800
800
#303CB1
oklch(42.7% 0.184 271.4)
-
Step 900
900
#29358C
oklch(37.6% 0.144 271.6)
-
Step 950
950
#182052
oklch(27% 0.091 272)
#3B47DB 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) | #0063E0 | 0.064 |
| Deuteranopia (no green cones) | #0054D8 | 0.041 |
| Tritanopia (no blue cones) | #006F8B | 0.174 |
| Achromatopsia (no color) | #5B5B5B | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B47DB
#3B47DB
oklch(49.1% 0.222 271.5)
- #765E00
#765E00
oklch(49.2% 0.101 91.4)
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 #3B47DB, closest first.
No curated palette has a color within ΔE 0.04 of #3B47DB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.043
- Majorelle Blue #3F37C9 ΔE 0.043
- Blue Blue #2242C7 ΔE 0.045
- Blurple #5539CC ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.050
- Azul #1D5DEC ΔE 0.054
- Purpley Blue #5F34E7 ΔE 0.058
- Light Royal Blue #3A2EFE ΔE 0.062
Use #3B47DB 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.