#3F5AE5
Closest named color: Warm Blue (#4B57DB). oklch(53.4% 0.212 269.3), rgb(63, 90, 229).
Aa
White text reads best on this color (5.51:1).
About this color
#3F5AE5 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.212 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.021 away. White text reads best on it, at 5.51:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.212) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #3F5AE5 |
| RGB | rgb(63, 90, 229) |
| HSL | hsl(230, 76%, 57%) |
| OKLCH | oklch(53.4% 0.212 269.3) |
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 #3F5AE5 | 5.51:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #3F5AE5 | 3.80:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #3F5AE5 text on white | 5.51:1 | AA | Lc 76.9 | Fine for body text |
| #3F5AE5 text on black | 3.80:1 | AA large text | Lc -24.8 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CBD8FD
oklch(88.4% 0.053 270)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7B9AFF
oklch(70.8% 0.152 269.4)
-
Step 500
500
#5B7CFD
oklch(63% 0.195 269.3)
-
Step 600
600 (this color)
#3F5AE5
oklch(53.4% 0.212 269.3)
-
Step 700
700
#374FCE
oklch(49.1% 0.197 269.4)
-
Step 800
800
#2D42A6
oklch(42.7% 0.162 269.2)
-
Step 900
900
#273984
oklch(37.6% 0.128 269.2)
-
Step 950
950
#17224D
oklch(26.9% 0.081 269.5)
#3F5AE5 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) | #0071EA | 0.057 |
| Deuteranopia (no green cones) | #0061E2 | 0.036 |
| Tritanopia (no blue cones) | #007E97 | 0.169 |
| Achromatopsia (no color) | #696969 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5AE5
#3F5AE5
oklch(53.4% 0.212 269.3)
- #866900
#866900
oklch(53.4% 0.109 89.6)
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 #3F5AE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.021
- Neon Blue #4361EE ΔE 0.022
- Azul #1D5DEC ΔE 0.028
- Royal Blue #4169E1 ΔE 0.037
- Bright Blue #0165FC ΔE 0.049
- Cerulean Blue #056EEE ΔE 0.051
- Electric Blue #0652FF ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.062
Use #3F5AE5 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.