#3D63F9
Closest named color: Neon Blue (#4361EE). oklch(56.6% 0.227 267.4), rgb(61, 99, 249).
Aa
White text reads best on this color (4.82:1).
About this color
#3D63F9 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.227 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.018 away. White text reads best on it, at 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.227) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.35:1 |
| White text | 4.82:1 |
Values
| HEX | #3D63F9 |
| RGB | rgb(61, 99, 249) |
| HSL | hsl(228, 94%, 61%) |
| OKLCH | oklch(56.6% 0.227 267.4) |
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 #3D63F9 | 4.82:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #3D63F9 | 4.35:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #3D63F9 text on white | 4.82:1 | AA | Lc 72.8 | Content text, not long reading |
| #3D63F9 text on black | 4.35:1 | AA large text | Lc -28.9 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500
#557EFF
oklch(63.2% 0.197 267.3)
-
Step 600
600 (this color)
#3D63F9
oklch(56.6% 0.227 267.4)
-
Step 700
700
#2E4ED6
oklch(49.2% 0.211 267.4)
-
Step 800
800
#2641AD
oklch(42.8% 0.175 267.4)
-
Step 900
900
#223989
oklch(37.8% 0.136 267.3)
-
Step 950
950
#142250
oklch(27% 0.086 267.5)
#3D63F9 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) | #007BFE | 0.057 |
| Deuteranopia (no green cones) | #0069F6 | 0.031 |
| Tritanopia (no blue cones) | #008AA5 | 0.179 |
| Achromatopsia (no color) | #727272 | 0.228 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D63F9
#3D63F9
oklch(56.6% 0.227 267.4)
- #937100
#937100
oklch(56.6% 0.116 87.6)
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 #3D63F9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.018
- Bright Blue #0165FC ΔE 0.030
- Azul #1D5DEC ΔE 0.037
- Cerulean Blue #056EEE ΔE 0.039
- Royal Blue #4169E1 ΔE 0.040
- Clear Blue #247AFD ΔE 0.053
- Warm Blue #4B57DB ΔE 0.053
- Electric Blue #0652FF ΔE 0.054
Use #3D63F9 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.