#3B5AEB
Closest named color: Neon Blue (#4361EE). oklch(53.7% 0.22 268.4), rgb(59, 90, 235).
Aa
White text reads best on this color (5.45:1).
About this color
#3B5AEB is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.220 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.020 away. White text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.220) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #3B5AEB |
| RGB | rgb(59, 90, 235) |
| HSL | hsl(229, 81%, 58%) |
| OKLCH | oklch(53.7% 0.22 268.4) |
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 #3B5AEB | 5.45:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #3B5AEB | 3.84:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #3B5AEB text on white | 5.45:1 | AA | Lc 76.6 | Fine for body text |
| #3B5AEB text on black | 3.84:1 | AA large text | Lc -25.2 | 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 600.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFE
oklch(93.7% 0.028 268.4)
-
Step 200
200
#CAD9FF
oklch(88.6% 0.055 268.3)
-
Step 300
300
#A7BFFF
oklch(81% 0.095 268.4)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#587DFF
oklch(63.1% 0.197 268.3)
-
Step 600
600 (this color)
#3B5AEB
oklch(53.7% 0.22 268.4)
-
Step 700
700
#334ED2
oklch(49% 0.205 268.5)
-
Step 800
800
#2A41AA
oklch(42.7% 0.17 268.5)
-
Step 900
900
#253987
oklch(37.8% 0.133 268.4)
-
Step 950
950
#15224F
oklch(27% 0.084 268.2)
#3B5AEB 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) | #0072F0 | 0.057 |
| Deuteranopia (no green cones) | #0061E8 | 0.032 |
| Tritanopia (no blue cones) | #00809A | 0.174 |
| Achromatopsia (no color) | #696969 | 0.221 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B5AEB
#3B5AEB
oklch(53.7% 0.22 268.4)
- #886900
#886900
oklch(53.7% 0.11 88.2)
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 #3B5AEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.020
- Azul #1D5DEC ΔE 0.022
- Warm Blue #4B57DB ΔE 0.030
- Royal Blue #4169E1 ΔE 0.040
- Bright Blue #0165FC ΔE 0.041
- Electric Blue #0652FF ΔE 0.048
- Cerulean Blue #056EEE ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.070
Use #3B5AEB 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.